Katie selling lemonade for $1.50 per cup she decides to put them on sale for $.90 what percent discount did she give on her lemonade

Domain= [0,18], Range = [0,31.50]

Step-by-step explanation:

If Charlie will only go to a single ride one time the possible rides he could go on would be 0 rides to all 18 rides for a domain of [0,18]. The output of the maximum and minimum x values would give us 0 dollars for riding 0 rides and 31.50 for riding all 18 (1.75 *0 = 0) and (1.75*18 = 31.50) so the range is [0, 31.50]