If a1 is the first of n geometric means between a and b, show that a1^n+1= a^b please the answer is needed urgently

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

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 the given system of equations. 2y= -x+9 , 3x-6= -15