A)
Let X be the food expenditure of a family.
Let the population mean of an expenditure of a family be.
Let the population standard deviation of an expenditure of a family be.
The proportion families spend more than $30 but less than $490 per month on food is,
Subtract 18 from 72 to get Michelle's current age.
72 - 18 = 54
The storage box is 9 feet deep.
Hope this helps!
147.3 as a mixed nunber is 147 and 3/10, 147.3 as an improper fraction is 1473/10
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