Answer:
Answer is C

Explanation:
Selling price of candy bar X =$2
Selling price of candy bar Y =$3
So if Julie sells x from X candy bars and y bars from Y candy bars,
Profit made from selling X candy bars =

Profit made from selling Y candy bars =

Therefore, assuming that there is no cost for the candy bars the profit by selling candy bars can be represented by the following objective function:

Therefore, answer is C