Question

1. Annette scored 85. 73. and 94 on her first three quizzes. How high does she need to

score on her fourth quiz to keep her quiz average at at least a B (8046) ?

Answer 1

at least a score of 68

Explanation:

(85+73+94+q)/4 ≥ 80

(252 + q)/4 ≥ 80

multiply each side by 4 to get:

252 + q ≥ 320

q ≥ 68

Answer 2

64. 80x4=320. 80 is a b average. 320-252=68. 252 is the total of her current grades.