Answer:
C. The number of multiple-choice questions plus the number of
short-answer questions is 15.
Explanation:
This question can be solved using a system of equations.
I am going to say that:
x is the number of multiple-choice questions
y is the number of short-answer questions.
Multiple-choice questions are worth 2 points, and short-answer questions are worth 5 points.
This means that:
![2x + 5y = 60](https://img.qammunity.org/2022/formulas/mathematics/college/cc0cpp2rq7omguk513t12aik6guf6m9h18.png)
The test has 15 questions.
This means that:
.
Which means that option C is the correct answer.