Leticia charges $8 per hour to babysit. she babysat friday night for 4 hours,
and then she babysat again on saturday. she earned a total of $72. how
many hours did leticia babysit on saturday?
choose two answers: one for the equation that models this situation and one
for the correct answer.
a. equation: 8(4 + x) = 72
b. equation: 4(8 + x) = 72
c. 5 hours
d. 11 hours

For this case we have that the variable "x" represents the number of hours that Leticia uses to take care of children on Saturday.

IF on Friday I use 4 hours ($ 8 each) and on Saturday "x" hours ($ 8 each) obtaining a profit of $ 72, we have the following equation:

We apply distributive property:

So, on Saturday she spent 5 hours.

Option A.

Option  C.

Step-by-step explanation:

Let be "x" the amount of hours  Leticia babysat on Saturday.

We know that she charges $8 per hour to babysit, she babysat Friday night for 4 hours and the total amount of money she earned on those two days was $72. Knowing this, we can set up the followin equation models this situation:

Finally, we must  solve for "x":

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

answer: 4 (:

step-by-step explanation: