Sam reduced The size of a photo proportionally to a height of 2 inches. what is the new width if it was originally 8 inches wide and 10 inches high? The answer is 6 however I don’t know how to get this answer
I keep getting the answer 1.2 but that’s wrong.

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?