Shelby invested some money in account that will mature in one year. If shelby withdraws the money after the maturity date, she will receive her initial investment plus 20% but if she withdraws her money now she will only able to withdraw 89% of what she put into the account. Shelby put $231 into the account initially. How much of her initial investment will she lose if she withdraws her money now

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?