Question

Solve the system by substitution. Check your solution. 0.5 x + 0.25 y = 36. y + 18 = 16 x. a. (36, 72) c. (49, 81) b. (9, 126) d. (21, 9) Please select the best answer from the choices provided A B C D

Answer 1

Explanation:

B. (9,126)

y + 18 = 16x

=>y=16x-18

0.5x + 0.25y = 36 (multiply both sides by 4)

=>2x+y = 144

Substitute y=16x-8

=>2x+16x-8=144

=>18x=152

=>x=152/18=9

y=16x-18

=>y=16(9)-18

=>y=144-18=126

Answer: x=9 and y=126