Question

Juan’s first 3 exam scores are 85, 93, and 87. What does he need to score on his next exam to average 90 for all 4 exams?

let x represent the score on his next exam

(put this in a multi-step equation)

PLEASE HELP

Answers

Steve
an average of 90 on 4 exams means 4*90=360 points in all.

So, how many points shy of 360 is the sum of the first three tests?
Josie
95
Angie
Jose wants to have an average of 80 for his 4 exams. Each exam is scored on a scale of 0 to 100. His first three exam scores are: 87, 72, 85. What does Jose need to score on the 4th exam to have a mean of 80 on all 4 exams?
Anonymous
95
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