Question

A construction crew needs to pave a road that is 202 miles long. The crew paves 9 miles of the road each day. The length, L. (in miles), that is left to be paved

after d days is given by the following function.
L(d)=202-9d
Answer the following questions.
(a) How many miles of the road does the crew have left to pave after 12 days?
94 miles
(b) If 139 miles of the road is left to be paved, how many days has the crew been.
paving the road?
days

Answer 1

7 days.

Explanation:

139 = 202 - 9d subtract 2002 from both sides of the equation

-63 = -9d Divide both sides of the equation by -9

7 = d