what score does the next test need to be to raise the students average to 80?

A student in an algebra course has test scores of 76, 85, 70 and 89
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1 Answer

skore so far: 70+76+85+89=320

averaej=320/4=80

alredee hav averaej=80, so tu keep it theer,

need tu get 80 on next test
by

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