Answer:
1.5 hours
Step-by-step explanation:
make each half hour represent t
Cost C(t) = 24 + 14t
66 = 24 + 14t
42 = 14t
t = 3
3 half hours = 1.5 hours
1 and a half hours of work
You minus 66 and 24 to get 42. Then you divide 42 and 14
