Question

You have $10.00 to spend on a birthday gift. So you go to the dollar store where each item costsexactly $1.25. You also have to pay $1.25 no matter how many items that you purchase. Let thenumber of items be represented by the variable n. What is the cost function?a. cost = $1.25 xnb. cost = $1.25 X n + $1.25 c. cost = $10.00 - ($1.5 x n + $1.25)d. cost = $10.00+ ($1.25 X n + $1.25)

Answer 1

Answer:

B. cost = $1.25 x n + $1.25

Explanation:

In the store, each item costs exactly $1.25.

Therefore, n items cost $1.25n.

Since you also have to pay $1.25 no matter how many items purchased, the cost function will be:

$\text{Cost}=\ 1.25\times n+\ 1.25$

The correct choice is B.