Help Please! It would help a lot 20 POINTS! 1. Winston grows green dragon apples. This year, he shipped $80\%$ of these apples to sell at supermarkets and kept the rest to make cider. Of all the green dragon apples he sold to the supermarkets, only $60\%$ of them were bought. If a total of $840$ green dragon apples were bought, how many green dragon apples did Winston keep to make cider?

2. Ms. Forsythe gave the same algebra test to her three classes. The first class averaged $80\%,$ the second class averaged $85\%,$ and the third $89\%.$ Together, the first two classes averaged $83\%,$ and the second and third classes together averaged $87\%.$ What was the average for all three classes combined? Express your answer to the nearest hundredth.

Runners run around the school's football field. the cross country coach determines that the width of the field is seventy yards shorter than the length. part a write an expression that represents the perimeter of the football field. let x represent the length of the football field. include parentheses in your expression. next, write an equivalent expression that does not include parentheses. what property or properties did you use to simplify? explain. part b the cross country coach later determines that the length of the football field is 120 yards. all students must run five laps. using your answer from part a, determine the actual number of yards that each athlete must run in the tryouts. in order to make the team, students must complete the laps in 6 minutes. how quickly must they run each lap?