if peter received grades of 88,83,75,and 80 on four tests in English, what is the minimum grade he has to score on the fifth test to have an average of at least 85 for the course?

(x+88+83+75+80)/5 ≥ 85

x+88+83+75+80 ≥ 425
x ≥ 99

look like Pete needs a perfect paper

To find out the minimum grade Peter needs on the fifth test, we can follow these steps:

Step 1: Calculate the sum of Peter's scores on the four tests.
88 + 83 + 75 + 80 = 326

Step 2: Calculate the minimum total score Peter needs for the five tests to have an average of at least 85.
Let's assume Peter got x on the fifth test.
326 + x = total score for five tests

Step 3: Calculate Peter's average score for the five tests.
(326 + x) / 5 = average score

Step 4: Set up an inequality to solve for x.
(326 + x) / 5 ≥ 85

Step 5: Solve the inequality.
326 + x ≥ 85 * 5
326 + x ≥ 425
x ≥ 425 - 326
x ≥ 99

Therefore, the minimum grade Peter has to score on the fifth test to have an average of at least 85 for the course is 99.