Question

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?

A.
D : 0 ≤ r ≤ 31.5
R : 0 ≤ C(r) ≤ 18
B.
D : 0 ≤ r ≤ 18
R : 18 ≤ C(r) ≤ 31.5
C.
D : 1 ≤ r ≤ 18
R : 1.75 ≤ C(r) ≤ 31.5
D.
D : 0 ≤ r ≤ 18
R : 0 ≤ C(r) ≤ 31.5

Answer 1

Answer:D

Step-by-step explanation:C(r) is how much money it will cost and r is how many rides there are 18 different rides and he won't go on one more than once so the r shoul be less or equalled to 18

if you multiply 1.75 by 18 then it will be 31.5 which means C(r) should be less or equalled to 31.5

he doesn't have to go on a ride so 0 has to be less or equalled to C(r) and r

this means D is correct