9. Let p = Pico
3/4p = 18
10. Let h = height with pedestal and foundation
151 + h = 305
11. Let m = Meredith
19 = 3 + 2m
12. Let p = number of pizzas, $5 off is - 5 from regular price
3p - 5 = 21.75
13. Option C.
14. Option A.
15. Let w = last week's miles
w =
(12) + 3
The word "half" tells you to use 1/2 in the equation. The phrase "three more than" tells you to use + 3. We multiply 1/2 by 12 (or divide 12 by 2; it's the same thing) because we are taking half of the miles Carmen ran "this week" as stated in the problem.