45.15 divied by 21 equal but the estimate

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.

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?