Question

A photographer charges a sitting fee of $15 plus $3 for each pose. How do you write a function to describe the situation?

Find a reasonable domain and range for up to 5 poses.

Answer 1

See a solution process below:

Explanation:

The formula for determine the total cost where there is a fixed cost and a variable cost is:

`t = f + vp`

Where:

• `t` is the total cost
• `f` is the fixed cost: $15 for this problem.
• `v` is the variable cost: $3 for this problem.
• `p` is the number of pieces or the number of poses for this problem.

Substituting the information from the problem gives the function:

`t = $15 + $3p`

Or

`f(p) = $15 + $3p`