Tamara purchased 31 cases of tile to use on her bathroom floors. she use it she used 17 in her upstairs bathroom and the rest downstairs bathroom. write an equation to express how many cases used in her down stair bathroom

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.