Question

A printing company uses the formula C = 0.5x + 10 to find the cost of printing x business cards.

Which equation correctly solves the formula for x?


A)x = 2C - 20


B)x = -2C + 20


C)x = C + 10/0.5


D)x = C - 0.5/10

Answer 1

A

Explanation:

since C=0.5x+10

to find x multiply by 2

2c=x+20

x=2c-20