Ecan anyone help me? In your class, you have scores of70,66,85 and 87and on the first four of five tests. To get a grade of c , the average of the first five tests scores must be greater than or equal to70 and less than80 .
a.
Solve an inequality to find the least score you can get on the last test and still earn a c .
b.
What score do you need if the fifth test counts as two tests?