SOLUTION: Nadia received quiz grades of 80, 86, 73, and 91. a. what grade would she need to make on the fifth quiz to get a B average, that is, at least 80 but less than 90? b. is it poss

Algebra ->  Inequalities -> SOLUTION: Nadia received quiz grades of 80, 86, 73, and 91. a. what grade would she need to make on the fifth quiz to get a B average, that is, at least 80 but less than 90? b. is it poss      Log On


   

Question 938448: Nadia received quiz grades of 80, 86, 73, and 91.
a. what grade would she need to make on the fifth quiz to get a B average, that is, at least 80 but less than 90?
b. is it possible for Nadia to get an A average for her quizzes (at least 90)?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

Nadia received quiz grades of 80, 86, 73, and 91.
a. what grade would she need to make on the fifth quiz to get a B average, that is, at least 80 but less than 90?
80%3C=%2880%2B86%2B73%2B91%2Bx%29%2F5%3C=90
80%3C=%28330%2Bx%29%2F5%3C=90
80%3C=66%2Bx%2F5%3C=90
80-66%3C=66-66%2Bx%2F5%3C=90-66
14%3C=x%2F5%3C=24
14%2A5%3C=5x%2F5%3C=24%2A5
70%3C=x%3C=120
b. is it possible for Nadia to get an A average for her quizzes (at least 90)?
no, it is NOT possible for Nadia to get an A average for her quizzes (at least 90) because it would require her to make 120 on the fifth quiz which is impossible since highest grade is 100