hi i'm really struggling with this and its due later today! If someone could show the work of how to do it and the answer that would be really appreciated!!

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.

Describe how you can act financially responsible.

Find the distance between the pair of points a(-1,8) and b(-8,4)