Melissa will participate in a charity walkathon. Her mother will donate $10 for Melissa's participation plus an additional $2 for each mile that Melissa walks

Question

Melissa will participate in a charity walkathon. Her mother will donate $10 for Melissa's participation plus an additional $2 for each mile that Melissa walks

Parts A
If Melissa walks 15 miles, what amount of her mother's donation will be?

Part B

What equation expresses P, the amount in dollars, of Melissa's mother's donation as a function of M, the number of miles that Melissa walks?
A. P= M+10
B.P=2m+10
C.P=10M+2
D. P= 2(M+10)

Answer 1

Part A:

If Melissa walks 15 miles, her mother's donation will be $10 (for participation) + $2/mile x 15 miles = $10 + $30 = $40.

Part B:
The equation that expresses P, the amount in dollars, of Melissa's mother's donation as a function of M, the number of miles that Melissa walks is:

C. P = 10M + 2