1.   Ten years ago, Mary invested $2500. Four years later, she invested $3000. Set up an equation that determines the current value of the two investments T(x) if each earns 10% annual interest per year.
    A. T(x) = 3000(1.0)10 +
2500(1.1)6
B. T(x) = 3000(1.0)10 +
2500(1.1)4
    C. T(x) = 2500(1.1)10 +
3000(1.1)4
D. T(x) = 2500(1.1)10 +
3000(1.1)6
    Hint

  2.   State the degree of the polynomial function f(x) = x4 - 2x2 + 3x - 1.
    A. 4 B. 2
    C. 5 D. 3
    Hint

  3.   Determine the zeros of the function y = x3 + 2x2 - 5x - 6.
    A. -3, -1, 4 B. -3, 2, 0
    C. -3, -1, 2 D. -1, 2, 3
    Hint

  4.   Write a polynomial equation of least degree with roots -1, 2i, and -2i.
    A. x3 - x2 + 4x + 4 = 0 B. 3x + x2 + 4x - 4 = 0
    C. x3 + x2 - 4x + 4 = 0 D. x3 + x2 + 4x + 4 = 0
    Hint

  5.   Find the roots of the equation x4 - 3x2 - 4 = 0.
    A. 2i, -2i, 2, -2 B. i, -i, 2, -2
    C. i, -i, 1, -1 D. 2i, -2i, 1, -1
    Hint