You Have a Job on an Assembly Line for Which $0.50 x - ( 12 ) = 144$

You have a job on an assembly line for which you are paid $12 per hour plus $0.50 per unit assembled. Write an algebraic model to find the number of units produced in an eight-hour day if your earnings for the day are $144 and then solve the resulting algebraic equation. Round your solution to the nearest integer.

A) equation: $0.50 x - ( 12 ) = 144$ solution: 240
B) equation: $0.50 x - 8 ( 12 ) = 144$ solution: 1
C) equation: $8 ( 12 ) + x = 144$ solution: 48
D) equation: $8 ( 12 ) + 0.50 x = 144$ solution: 96
E) equation: $x - 8 ( 12 ) = 144$ solution: $9$