What type of function best models the data in the
graph?

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.

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=