Question Brett earned scores of 74, 90, and 84 on his first three quizzes this term. What score does he need on his next test to raise his average to 85?

Answer: x ≥ 92 Step-by-step explanation: let ‘x’ = necessary score (74 + 90 + 84 + x) / 4 ≥ 85 (248 + x) / 4 ≥ 85 cross-multiply: 248 + x ≥ 340 x ≥ 92 Log in to Reply

Answer:92

Step-by-step explanation:(74 + 90 + 84 + 92) / 4 = 85

Answer:x ≥ 92

Step-by-step explanation:let ‘x’ = necessary score

(74 + 90 + 84 + x) / 4 ≥ 85

(248 + x) / 4 ≥ 85

cross-multiply:

248 + x ≥ 340

x ≥ 92