A student has scores of 87, 81, 96, and 79 on four quizzes. What must she score on the fifth quiz to have an average of at least 86?

87 points.

Step-by-step explanation:

A student has scores of 87, 81, 96, and 79 on four quizzes.

The sum of the four scores = 87 + 81 + 96 + 79 = 343

In order to have an average of atleast 86 in five quizzes, then the student must make a total of 86 × 5 = 430

Since she has a total of 343 in the four quizzes, then she must score 430 - 343 = 87  in the fifth quiz (so that she makes an average of 86 in the five quizzes).

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step-by-step explanation: