Question

Alyssa is driving to a concert and needs to pay for parking. There is an automatic fee of $12 just to enter the parking lot, and when she leaves the lot, she will have to pay an additional $3 for every hour she had her car in the lot. How much total money would Alyssa have to pay for parking if she left her car in the lot for 2 hours? How much would Alyssa have to pay if she left her car in the lot for tt hours?
Answer
Attempt 1 out of 2

Cost of parking for 2 hours:
Cost of parking for tt hours:

Answer 1

Cost for 2 hours: $12 + $3·2 = $12 + $6 = $18.

Cost for tt hours: $12 + $3·tt (or C(t) = 12 + 3t), in dollars.