The volume of this sphere is 500pi/3 cubic inches. what's it's radius

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.

One integer is 5 more than another. their product is 104. find the integers

Can someone check if i did this correct. it’s number 4 if you’re wondering.