Parking in a student lot costs $1 for the first half hour and $1.50 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $7?

4.5 hours

Step-by-step explanation:

First subtract $7 -$1 for the first half hour to see how much money is left over

$7-$1= $6 dollars left

$1.50 for each hour

6/1.50= 4 hours

Don't forget the first half hour.  So 4.5 hours

y=1/4x-4

step-by-step explanation:

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.