Aphotographer charges a sitting fee of $15, and charges $4 for each 5-in. by 7 in. photograph the customer orders. the linear function c=15+4n can be used to calculate the customer’s cost (c) based on the number of photographs (n) purchased. how many photographs can be purchased if you cannot spend more than $50.00?
a. no more than 7 photographs
b. no more than 3 photographs
c. no more than 8 photographs
d. no more than 9 photographs