Soda is on sale for $0.75 a can, and you have a coupon for $0.50 off your total purchase. Write a function rule for the cost of n sodas. How much would 10 sodas cost?
(1 point)
O Cn) = 0.5m - 0.75, 54.25
O C(n) = 0.757- 0.5, 57.00
C(n) = 0.5n - 0.5 54.50
C(n) = 0.75n; $7.50
The function rule for the cost of n sodas is C(n) = 0.75n - 0.50.
To find out how much 10 sodas would cost, plug in n = 10 into the function:
C(10) = 0.75(10) - 0.50
C(10) = 7.50 - 0.50
C(10) = 7.00
Therefore, 10 sodas would cost $7.00.