Tom is planning a birthday party for his nephew at the local skating rink. There is a standard fee of $25 plus an additional $3 for each child. Which function would best indicate the cost for the party

For this case, the first thing we must do is define variables:

x: number of children

y: total cost

We now write the equation that models the problem.

We have then:

y = 3x + 25

Answer:

A function that would best indicate the cost for the party is:

y = 3x + 25