Does anyone knows this answer? i need with this

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

What is the ratio of the length of an object in yards to the length of the same object in miles?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?