What is total cost of 3 sets of christmas lights that cost 12.50 each if you must pay 6.5% tax

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2