Wendy has taken two tests with scores of 77 and 80. To get an 82 average, what must her grade be on the third test?
Please help

89

Step-by-step explanation:

Given that Wendy took 2 tests and scored, 77 and 80 respectively, let x represent the grade of Wendy's third test.

To get an average grade of 82, let's generate an equation to find x (Wendy's grade on her third test).

Average grade = sum of all 3 grades all over 3

Multiply 3 by both sides

Subtract 157 from each side of the equation

Wendy must score 89 on her third test to have an average of 82.

its definatley   this on your answer choice?

slope is 35 and 20 miles is the y-intercept.

step-by-step explanation: