Please help I need the answers now!

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.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer