Question

Reuben has scores of 70,75,83, and 80 on four spanish quizzes. what score must he get on the next quiz to achieve an average of at least 80?

Answer 1

ok well If he gets a 92 percent he will have a 80!! :)

Answer 2

x - the score he must get


`(70+75+83+80+x)/(5) \geq 80 \\ (308+x)/(5) \geq 80 \\ 308+x \geq 400 \\ x \geq 92`

He must get at least 92 points.