Piecewise functions can anyone teach me about peicewise functions my teacher have me homework for it and didn't teach it

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.

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

How many grams the dog will eat in 3 days?