Cary earned $56 for 7 hours of babysitting. Part A: What is Cary's unit rate for babysitting? Part B: At this rate, how much would Cary earn for 55 hours of babysitting?

8$ an hour, she'd earn 440$ for 55 hours

Part A=8

Part B = 440

Step-by-step explanation:

Part A; unit rate = per hour rate = 1hr=$x

From question,

7hours = $56

1hour = x

Cross multiply;

7*X = 56*1

7X=56

Divide through by 7

X=56/7

X=8

Recall X = hourly rate

So cary's unit rate for babysitting is $8

Part B;

Let cary's earning for 55hours be $y

Recall

1hour = $8

55hours = y

Cross multiply

1*y = 8*55

Y = 440

Therefore in 55hours, Cary would earn $440.