Solve the problem.
-A local race for charity has taken place since 1993. Using the actual speeds of the winners from 1993 through 1998, mathematicians obtained the formula y = 0.18x + 5, in which x represents the number of
Years after 1993 and y represents the winning speed in miles per hour. In what year is the winning speed
Predicted to be 7.16 mph?
A)2005
B)2004
C)2006
D)2007

Question

Quizplus · Accepted Answer

The winning speed is predicted to be 7.16 mph in 2005.To solve for x, substitute y = 7.16 into the equation y = 0.18x + 5 and solve for x:7.16 = 0.18x + 50.18x = 2.16x = 12Since x represents the number of years after 1993, the winning speed is predicted to be 7.16 mph in 1993 + 12 = 2005.

Solve the Problem. -A Local Race for Charity Has Taken Place Since 1993