Problema Solution
Your quiz grades are 73, 75, 89, 91. What is the lowest grade you can obtain on the last quiz and still achieve an average of at least 85?
Answer provided by our tutors
let 'x' be the grade obtained in the last quiz
the average of 73, 75, 89, 91 and x needs to be at least 85 that is
(73 + 75 + 89 + 91 + x)/5 >= 85
by solving the inequality we find
x >= 97
click here to see the step by step solution of the inequality
the lowest grade obtained is 97.