Hey I don’t know much of this but I really recommend you to re ask this question but choose the other option to talk to an expert :)
Sixth grade
Because if you divide their total profit by the total amount of hours they worked, you would find that the sixth grade's income per hour is the highest.
Sixth grade: 170÷5=34
Seven grade: 112÷4=28
Eighth grade: 192÷6=32
Answer:
6.5 Hours
Step-by-step explanation:
Divide 338 by 52 to get the answer
Answer:

Step-by-step explanation:
Formula for the perimeter of a rectangle: 
I got 16.8 , but she’ll need roughly 17 gallons of paint :)
how i did it :
1. so you know she’ll need 4/5 per book case, and there are 16 bookcases.
2. So you do 16 x 5, then you get 84
3. and you divide 84 by 5. and you’ll get 16.8, that’s how many gallons of paint she needs