Question

A shipping company charges a cost per pound plus a fixed fee to ship a package. The total cost, 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 and how do you know?
x
4.99
5.75
4.99x

Answer 1

The fixed fee is $5.75. This part of the equation is called the constant.  There are no variable being multiplied or divided meaning it is not being grouped in any way.  This tells us it stands alone and represents a number that is non -changing or fixed.