Suppose tuna is on sale for $0.90 a can, and you have a coupon for $0.40 off your total purchase. Write a function rule for the cost of n cans of tuna.

(1 point)
Responses

C(n) = 0.90n – 0.40
C ( n ) = 0.90 n – 0.40

C(n) = 0.40n – 0.90
C ( n ) = 0.40 n – 0.90

C(n) = (0.90 + n) – 0.40
C ( n ) = (0.90 + n ) – 0.40

C(n) = (0.40 + n) – 0.90