Question

The cost to mail a box of textbooks can be modeled by the function f(x)=1.75x+5.25, where x is the number of books mailed. what y-intercept of the function represents

A. the cost to mail a box with no textbooks
B. The number of books mailed
C. The cost per book

Answer 1

I say the answer is A, because according to the function, it's showing the prices and X is the # of the books. 1.75 each textbook.

Answer 2

Given the expression

`f(x)= 1.75x+5.25`

Where f(x) or y is the cost of the number of textbooks mailed

x is the number of textbooks mailed

At y-intercept, we know that x is always 0

so here at y-intercept , the number of textbooks mailed is 0

The value of y- intercept gives us the cost of box when no textbooks are mailed

Hence the right option is the cost of mailing the box with no textbooks inside