Answer this question to get marked as brainliest

Rearrange the formula c^2 = a^2 + b^2 for b

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%.

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b