A photocopy of a polygon was reduced to 80% of its original size. The , the copy was again reduced to 80% of its size. What is the ratio of the corresponding sides of the second photocopy to the original?

How do you use the elimination method for this question? explain, because i really want to understand!

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Taber invested money in an account where interest is compounded every year.he made no withdrawals or deposits. the function a(t)=525(1+0.05)^t represent the amount of money in the account after t years. how much money did taber origanally invested?