Answer:
He must have a score of 80 or higher.
Explanation:
83
≥ 83 Multiply both sides by 4
252 + x 332 Subtract 252 from both sides
x 80
Answer:%80
Step-by-step explanation: take 83 x 4 (4 being the total number of test) and you get 332, then take the 332 and subtract the current test score (78,88,86). Finally you have your answer, %80
7.7m questions
10.3m answers