Derek has $20 to spend on used books. Hardcover books cost $5 each and paperbacks cost $2 each.

Part A
Complete the equation which determines the number x of hardcover books and the number y of paperback books he can buy.

x + y =

7

step-by-step explanation:

yuo ned the activity or vertical angle of the form of 1,7 but 2,2 has a c4,2 as it verticie so i not have a car

he answer is x=1x3 because x=1 to x=3

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