Question

1. the function f(x) gives the cost in dollars of purchasing x identical items. what does the statement f(4) = 10 mean in this context? a. the cost of 4 items is $10. b. the cost of 10 items is $4. c. the cost of each item is $10. d. the cost of each item is $4.

Explanation:

The function \( f(x) \) represents the cost (in dollars) of purchasing \( x \) identical items. So \( f(4) \) means we are evaluating the function at \( x = 4 \), which corresponds to the number of items being 4, and \( f(4)=10 \) means the cost for 4 items is $10. Option A matches this interpretation. Option B swaps the number of items and the cost. Options C and D refer to the cost per item, but \( f(x) \) gives the total cost for \( x \) items, not the unit cost.

Answer:

A. The cost of 4 items is $10.