Mathematics, 12.11.2020 18:30, kprincess16r

Nigel wants to average 85% on his four tests. He got 77%, 89%, 78% on his first three tests. What does he need to get on his last test to average 85%?

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Nigel wants to average 85% on his four tests. He got 77%, 89%, 78% on his first three tests. What do...