A gift shop sells t-shirts for $20 for the first one
purchased plus $15 for each additional t-shirt. If a
customer has exactly $100 to spend, what is the
range for this situation if the total cost, y, is
dependent on the number of t-shirts purchased, x?
A.
(0,1,2,3,4,5,6}
B. {0, 20, 35, 50, 65, 80, 95}
C. 0 ≤ y ≤ 100
D. 20 ≤ y ≤ 100