12 - 3 × c = c y + 4 = 3 × y + 3

-8 × w + 30 = 2 × w - 20

9 × x + 1 = 7 × x + 19

y + 10 = 8 × y + 24

d + 6 = 2 × d + 2​

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm