Select all of the following equation(s) that are quadratic in form. x4 – 6x2 – 27 = 0 3x4 = 2x 2(x 5)4 2x2 5 = 0 6(2x 4)2 = (2x 4) 2 6x4 = -x2 5 8x4 2x2 – 4x = 0

The expression 1.08s + 1.02b1.08s+1.02b1, point, 08, s, plus, 1, point, 02, b predicts the end-of-year value of a financial portfolio where sss is the value of stocks and bbb is the value of bonds in the portfolio at the beginning of the year. what is the predicted end-of-year value of a portfolio that begins the year with \$200$200dollar sign, 200 in stocks and \$100$100dollar sign, 100 in bonds?