Marianna wants to buy a new tennis racket that costs $57.50. she has $8 and plans to save $4.50 each week. how many weeks will it take her to save the money?

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Math it's appreciated. (picture provided)

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a