Kamil invests 9000 for 4 years his investment pays compound interest of x% per anumn

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning