Answer:
47 + 40 x 4
Step-by-step explanation:
sum is adding 2 numbers together and you would then multiply 4 after adding :)

a.) Initial cost of renting the car is $100
b.) rate of change is slope, that is :
c.) Cost = C and distance = d
the equation will be :
see attached picture of how graph should look.
search through word for a graph icon, you should be able to do this in Word.