What is the function rule for the following? Rex paid $20 for a membership to the pool and pays $3.00 each time he goes to the pool.

Question

My answer is y = x + $20

Answer 1

If x is the number of times he visits, what happened to the 3? He pas $3 each time he goes, not just 1.

The 20 looks good.

But, usually the units are not included in the equation.