Question

karen has taken 4 science quizzes. her scores where 72,80,84, and 92. what minimum score must she get on her next quiz to have an average score of at least 84? A. 82 B. 84 C.92 D.95

Answer 1

$Ave = \frac{72+80+84+92+x}{5} = 84$
$328+x=420$
$x=92$