SOLUTION: Your quiz grades are 73, 75, 89, and 91. What is the lowest grade you can obtain on the last quiz and still achieve an average of at least 85?

Algebra ->  Inequalities -> SOLUTION: Your quiz grades are 73, 75, 89, and 91. What is the lowest grade you can obtain on the last quiz and still achieve an average of at least 85?      Log On


   

Question 164338This question is from textbook Algebra 1
: Your quiz grades are 73, 75, 89, and 91. What is the lowest grade you can obtain on the last quiz and still achieve an average of at least 85? This question is from textbook Algebra 1

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(73+75+89+91+x)/5>85
(328+x)/5>85
328+x>425
x>425-328
x>97 for the last test score.