Solve the problem.
-Sarah has grades of 90 and 97 on his first two tests. If she wants an average of at least 90 after her third test, what score must she make on that test?
A) 94 or more
B) 90 or more
C) 92 or more
D) 83 or more

Question

Quizplus · Accepted Answer

To achieve an average of at least 90 over three tests, the total points must be at least 270 (90 * 3). Sarah already has 187 points (90 + 97), so she needs at least 83 more points (270 - 187) on her third test.

Solve the Problem. -Sarah Has Grades of 90 and 97 on His First