Which is true about the degree of the sum and difference of the polynomials 3x^5^y – 2x^3y^4 – 7xy3 and –8x^5y + 2x^3y^4 + xy^3?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%