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The government created the[br]following stem-and-leaf plot

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showing the number of turtles at[br]each major zoo in the country.

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How many zoos have[br]fewer than 46 turtles?

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So what the[br]stem-and-leaf plot does

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is it gives us the first[br]digit in each number

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and essentially you could[br]call this the tens place.

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And then it gives[br]us the ones place.

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So there was only one zoo[br]that had four turtles.

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So you could view this[br]as 0, 0, 4, or 4 turtles.

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Then everything here,[br]the tens place, is a 1.

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So this number right[br]here is really an 11.

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This is a 14.

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This right over[br]here would be a 16.

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That's a 16, and[br]so forth and so on.

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This would be 17, 18.

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All of this is 23.

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This is 23.

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This is 26 because we have our[br]tens place right over here.

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This is the first digit.

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So let's answer the question.

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How many zoos have[br]fewer than 46 turtles?

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So there are no zoos that[br]had 40 anything turtles.

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And so all of these zoos[br]here-- so all of these

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had 30 something turtles,[br]these had 20 something turtles,

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these have in the teens,[br]this has single digits.

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So it's literally as many[br]zoos as we have listed here.

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So 1, 2, 3, 4, 5, 6, 7, 8, 9,[br]10, 11, 12, 13, 14, 15, 16, 17.

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17 zoos have fewer[br]than 46 turtles.

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Let's do another one.

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The buyer for a[br]chain of supermarkets

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created the following[br]stem-and-leaf plot

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showing the number of coconuts[br]at each of the stores.

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What was the smallest number[br]of coconuts at any one grocery

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store?

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So the buyer for a[br]chain of supermarkets

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created the following[br]stem-and-leaf plot

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showing the number of coconuts[br]at each of the stores.

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So at any one grocery store[br]the smallest number-- well,

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that's this one right over here.

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And remember, it's not two.

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We have our tens[br]places right over here.

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It's a one.

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So this right over[br]here represents

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12 coconuts at that store.

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So we'll put 12 right over here.

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Let's try another one.

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A statistician for a[br]chain of department stores

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created the following[br]stem-and-leaf plot

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showing the number of watches[br]at each of the stores.

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How many department stores[br]have exactly seven watches?

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Well that's only this one[br]right over here-- 07 watches.

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This one, this, this,[br]and that one are not 7.

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This is representing 17[br]because it's in the row with 1

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at the beginning.

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This right over[br]here represents 27

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because it's in the row[br]with the 2 at the beginning.

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So there's only one store that[br]has exactly seven watches.

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Let's do one more.

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This is kind of fun.

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A zookeeper created the[br]following stem-and-leaf plot

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showing the number of tigers at[br]each major zoo in the country.

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How many zoos have[br]more than 24 tigers?

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So we can ignore the[br]zeros and the teens

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and we get in the 20s.

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This is 25.

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So that meets the criteria.

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And then you go to 28, 29.

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So all of these in the 30s and[br]all of these right over here.

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This 3, 0-- this[br]doesn't mean 0 tigers.

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This is 30 tigers.

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This is 40 tigers.

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So we count 1, 2, 3,[br]4, 5, 6, 7, 8, 9, 9

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zoos have more than 24 tigers.

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9 zoos.

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And we're done.