Question

A repair company's charge for repairing a certain type of copy machine fits the model

y = 55.42 +0.985x where y is the number of dollars charged and is the number of minutes the repair
person is on the job.
Solve the formula,
y = 55.42 +0.985x for x.
x= ?

Answer 1

x=1y−56.263959

Explanation:

y=55.42+0.985x

Step 1: Flip the equation.

0.985x+55.42=y

Step 2: Add -55.42 to both sides.

0.985x+55.42+−55.42=y+−55.42

0.985x=y−55.42

Step 3: Divide both sides by 0.985.

0.985x/0.985 = y−55.42/0.985

x=1.015228y−56.263959