Recall the Application about the government of Mexico City repainting highway lane lines to transform a 4-lane highway into a 6-lane highway to answer the following question(s).
-To increase income by $120 when the slope of the curve showing the relationship between your income and work hours is 8, how many extra hours will you need to work?
A) 8
B) 15
C) 112
D) 960

Question

Quizplus · Accepted Answer

The formula for calculating the increase in income is given by Δy = mΔx, where Δy is the increase in income, m is the slope of the curve, and Δx is the increase in work hours. Substituting the given values, we get Δy = 8Δx = $120, which gives Δx = $120/8 = 15. Therefore, the extra hours needed to work to increase income by $120 is 15 hours. The correct choice is B.

Recall the Application About the Government of Mexico City Repainting