Question

to get an a in a course you must have an average of at least 90 on four tests that are worth 100 points each. Your scores on the first three tests were 87, 92,
and 84 set up and solve an inequality to find the range of the score that you need on the last test to get a course grade of "A"

Answer 1

(87+92+84+n)/4 = 90

Solve for n
87+92+84+n = 360
n=97

The last score must be a 97 percent.

Answer 2

87+92+84=263
you need a 97 on the test
263+97=360
divided by 4=90 so there :)