She has to score at least 86 on her fifth test.
Further explanation:
We will use the average formula to find the fifth value.
Given

We have to find x5
The formula for average is:


She has to score at least 86 on her fifth test.
Keywords: Average, Word Problems
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Answer:
9:04
Step-by-step explanation:
21 - 17 = 4
it's using subtraction

The answer will be the third one: Yes, because the total will be $37.50.