**Answer:**

37.5%

**Step-by-step explanation:**

3/8=375/1000=37.5/100 37.5%

**Answer:**

B 1.25 hours

**Step-by-step explanation:**

total cost = flat fee + hourly charge* hours

120 = 45+60*h

We need to solve for h

subtract 45 from each side

120-45 = 45-45+60h

76 = 60h

Divide each side by 60

75/60 = 60h/60

1.25 = h

**Answer:**

to find the slope of any graph

use this equation

**Step-by-step explanation:**

The perimeter of a square is equal four times a length of the side.

**P = 4(7x - 3y) = (4)(7x) - (4)(3y) = 28x - 12y**