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For one child, a childcare facility charges $350 per month for preschool and $5.00 per hour for each additional hour for after-school care. The function below can be used to determine f(h), the monthly fee for after-school care and preschool, where h represents the number of hours spent in after-school care. f(h) = 350 + 5h If the total monthly bill for one child was $750, what was the total number of hours the child spent in after-school care? A. 100 B. 90 C. 88 D. 80

User Shibon
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1 Answer

5 votes

Answer:

D. 80

Explanation:

We have the following function :


f(h)=350+5h (I)

Where
f(h) is the monthly fee for after - school care and preschool.

Where
h represents the number of hours spent in after - school care.

We know that the total monthly bill for one child was $750 ⇒


f(h)=750

Using (I) we will find the value of the hours ''
h'' that verifies the expression ⇒


f(h)=750=350+5h


750=350+5h\\750-350=5h\\400=5h\\h=(400)/(5)=80

We find that the value of the hours ''
h'' is 80 hours.

The total number of hours the child spent in after - school care is D. 80

User Petr Havlicek
by
9.5k points
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