You 2 Lamont keeps track of his math grades by recording them
in a table. He wants to keep an average of 90, so he also
lists the amount that each grade is above or below 90.
a. Complete the table.
may want to
group the positive
numbers and the
negative numbers.
1
2
3
4
5
6
Test
Grade
Above/Below 90
83
94
79
96
-7
7
b. Use the numbers in the Above/Below 90 row to find
out whether Lamont's average is above or below 90.
Show your work.
Solution:
c.
What grade does Lamont need to get on the next
test to have an average of exactly 90? Explain your
answer.