What is the solution to this equation?

7x – 2(x – 10) = 40

7x-2x-20=40

5x-20=40

5x=40+20

5x=60

x=60/5

x=12

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

i think the amount would be $140.62