A Regression Equation Is Found That Predicts the Increased Cost

Multiple Choice

A regression equation is found that predicts the increased cost of a home owner's electricity bill Given the number of holiday lights they put on the outside of their house. The equation is dollars =2.5 + 0.02(light) . If a house has 400 lights and a $15 increase in their electricity cost, find their residual.

A) $20
B) $5
C) -$15
D) $15
E) -$5