Answer:
x=-9e^4
Step-by-step explanation:
13. You add the 8 and the 5
Answer:
y = 13.50x + 20
y = 17x + 6
The cost is the same after 4 hours.
Step-by-step explanation:
I don't really know what to say except you just have to replace x with 4 and then work it normally from there.