To calculate the total cost of Jessica's side dishes for 15 days, we first need to determine the daily cost of her selected side dishes.
Each fruit cup costs $0.75, and each salad costs $1.50. Therefore, the total daily cost of the fruit cup and salad combined is:
\[ 0.75 + 1.50 = 2.25 \]
Now, we find the total cost for 15 days by multiplying the daily cost by the number of days:
\[ 2.25 \times 15 = 33.75 \]
Thus, the total cost of Jessica's side dishes for 15 days is:
\[ \text{Total cost} = 33.75 \]
The answer is:
D. $33.75
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