Question

Help with these questions?

Answer 1

#8 is x = 10
#9 is x = 4

Answer 2

8)
10x - 50 = y if y = 50
10x - 50 = 50
10x = 100
x = 10
answer 10 (second choice)

9)
1/8x = y  if y = 1/2
1/8x = 1/2
x = 1/2 x 8
x = 4

answer 4 (last choice)

10) 4^2 + 1 = 16 + 1 = 17

answer is 17 (last choice)