Pls help me on this pls

1.B not sure about 2 though sorry i couldnt help u on 2 Step-by-step explanation:

D. 80

Step-by-step explanation:

We have the following function  :

(I)

Where is the monthly fee for after - school care and preschool.

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

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

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

⇒

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

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