Solve the problem.
-The change in a certain engineer's salary over time can be approximated by the linear equation y = 1500x + 47,500 where y represents salary in dollars and x represents number of years on the job.According to this equation, after how many years on the job was the engineer's salary $64,000?
A)13 years
B)11 years
C)12 years
D)10 years

Question

Quizplus · Accepted Answer

To find the number of years (x) when the engineer's salary (y) was $64,000, substitute $64,000 for y in the equation and solve for x: $64,000 = 1500x + 47,500. Subtracting 47,500 from both sides gives $16,500 = 1500x. Dividing both sides by 1500 gives x = 11.

Solve the Problem. -The Change in a Certain Engineer's Salary Over Time Can