Question

Jay went to an amusement park. The park charges an entrance fee of $10.50 and $4.50 for every ride. Jay spent $46.50 on entrance fees and rides. Which fuction can be used to find the number of rides he went on?
f (x) = 4.5 x + 10.5
f (x) = 4.5 x
f (x) = 4.5 x minus 10.5
f (x) = negative 4.5 x

Answer 1

f(x) = 4.5x + 10.5

This represents total cost = $10.50 entrance + $4.50 per ride. To find x set 4.5x + 10.5 = 46.5, so 4.5x = 36 and x = 8 rides.