Given the function g(x)=x3−x,
what is the value of g(3)?

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.

Need on this one asap im almost done with this subject

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?