Answer:
11
Step-by-step explanation:
I think that either A or B have to be the number of days
F(x) = x^2 + 1 f(10)
f(10) = 10^2 + 1
f= 101
Example A means
For every #of felt pieces you multiply that by the cost of one piece of felt to see how much you spent
Example
Felts cost $3 a piece
You get 7 pieces
7 x 3= 21
You spent $21 on felt
