A shipping company charges a cost per pound plus a fixed fee to ship a package. The total cost, f(x), in dollars, of shipping x pounds is modeled by the function shown.
f(x)= 4.99x + 5.75
Which part of the function represents the fixed fee?
A. x
B. 4.99
C. 5.75
D. 4.99x
Fixed fee is $5.75, since it is an initial fee. It would be torture if fees weren't fixed.