In your class, you have scores of
8383,
6666,
8383,
and
8484
on the first four of five tests. To get a grade of
Upper CC,
the average of the first five tests scores must be greater than or equal to
7070
and less than
8080.
a.
Solve an inequality to find the least score you can get on the last test and still earn a
Upper CC.
b.
What score do you need if the fifth test counts as two tests?