Jessica started spending more time on her math homework, and as a result her grade average increased from an 82 to an 88 over a 3-week period. To the nearest tenth of a percent, what was the percent increase in her average grade over in her average grade over the 3-week period?

6.8%.

Step-by-step explanation:

Given:

Jessica grade average increased from an 82 to an 88 over a 3-week period.

Question asked:

What was the percent increase in her average grade over in her average grade over the 3-week period?

Solution:

Old average grade of Jessica = 82

New average grade of Jessica = 88

To find the percent increase in her average grade, we will use :-

Therefore, the percent increase in her average grade over the 3-week period was 6.8%.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

no idea

step-by-step explanation: