Question

your test grades are 85,74, and 91. What is the lowest grade you can get on the next test and have an average of at least 80

Answer 1

70

Explanation:

Answer 2

Lowest grade is 70.

Explanation:

To have an average of 80 the total score is 4 * 80 = 320.

So the score for the next test must be 320 - (85 + 74 + 91)

= 70.