Sam’s Music Store wanted to take a survey of the age range of people that visited the store. Over the course of a week, they ask
40 people their age as they walked in. Above is a box plot of the collected data. Answer the following questions about the box plot in relation to the problem.
How many customers were age 28 or below? Use a specific number, not a percentage.
How many customers were age 28 or below? Use a specific number, not a percentage.
1 answer:
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Let 
be the length of the rectangle and 
be the width. In the problem it is given that 
. It is also given that the area 
. Substituting in the length in terms of width, we have 
. Using the zero product property, 
. Solving these we get the width 
. However, it doesn't make sense for the width to be negative, so the width must be 
. From that we can tell the length 
.