The following function give the cost based on the number of x items purchased.
C(x)=3^x +2, What does C (7) represent in the context of the problem?
a. 7 items are being purchased
b. 3^7
c. The cost of purchasing 7 items
d. 3*7+2
The function C(x) = 3^x + 2 represents the cost based on the number of items purchased, where x is the number of items.
Therefore, C(7) represents the cost of purchasing 7 items. Thus, the correct answer is option c.