Question

In order to earn an A in a class, your test scores must average at least 92%. On the first 6 tests, you have an average of 91%. What score do you need to get on the last test to earn an A? Show your work.

Answer 1

.91 = sum of first 6/6
so
sum of first 6 =5.46

sum of first seven then is 5.46 + x
so
(5.46 + x)/7 >/= .92

5.46 + x >/= 6.44

so
x >/= .98

Answer 2

EXCELLENT. Thanks much.