B.
He has used the highest recommended percentages to calculate the amounts for the three categories.
Answer:
63
Step-by-step explanation:
Just input 3 instead of x, you would get 14(3) + 21 = 63
radius x radius x pi = area of circle
6 x 6 = 36
36 x 3.14 = 113.04
113.04
Hope this helps