Answer:
m = (f(4) - f(2)) / (4 - 2)
m = (24 - 10) / (4 - 2)
m = 14 / 2
m = 7
Step-by-step explanation:
650 - 50 one off fee = 600
600÷150=4 hours
The slope is -39/98
also known as m=-39/98
