What is the product of the polynomials below? (7x2 + 5x + 7)(4x - 6) a. 28x3 - 62x2 - 2x - 42 b. 28x3 - 22x2 - 58x - 42 c. 28x3 - 22x2 - 2x + 42 d. 28x3 - 22x2 - 2x - 42

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Solve for the equation. 4x - 13 = 2x + 9

Maria has $10,000 to invest in two accounts.he decides to invest one part in an account with 5% interest and the rest in an account with 8% interest. at the end of the year he has earned $702,50 in interest.¿how much did maria invest in the 8% account?