Consider the expansion of (x + 2y)^10. determine the coefficients for the terms with the powers of x and y shown.
a. x^2y^8
b. x^4y^6
c. x^5y^5

Which account has the highest effective annual interest rate? not necessary but show how you got your answer.a. account 1: interest is compounded quarterly at an annual rate of 4.20%.b. account 2: interest is compounded monthly at an annual rate of 4.15%.c. account 3: interest is compounded semiannually at an annual rate of 4.10%d. account 4: interest is compounded annually at a rate of 4.25%.