Question

will mark brainliest plz help 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?

Answer 1

the 5.75. this number is unattached to a variable and thus is a constant. no matter the value of x, 5.75 will not change in value until added.

Answer 2

General Idea:

If the function is of the form f(x) = mx + b, then m represent the slope and b represent the y-intercept.

Applying the concept:

$f(x)=4.99x+5.75$

Where:

$x \;\; \; \; \; \; \rightarrow \; Number \; of\; Pounds\; of\; Shipping\; Package\\ \\ f(x) \; \rightarrow \; Total\; Cost$

To find the fixed fee, we need to substitute 0 for x, because fixed fee is the fixed cost when there is NO package is shipped.

$f(0) = 4.99(0)+5.75\\ \\ Fixed \; Cost \; = \; \ \; 5.75$