Max is having trouble evaluating 3x^2 when x=2. He attempts to solve it in 3 different ways and gets 3 different answers! Review Max’s work and identify the correct solutions and explain what mistakes he made.

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?