1.   Write the expression 4 · 4 · 4 · 4 · 4 using exponents.
    A. 54 B. 45
    C. 55 D. 44
    Hint

  2.   Write x6 as a multiplication expression.
    A. x · x · x · x · x · x
    B. 6x
    C.
    D. 6 · 6 · 6 · 6 · 6 · 6
    Hint

  3.   In the expression (-4)2, -4 is called the ______.
    A. exponent B. power
    C. product D. base
    Hint

  4.   Express 130,254 in expanded form.
    A. (1 × 105) + (3 × 104) + (2 × 103) + (5 × 102) + (4 × 101)
    B. (1 × 106) + (3 × 105) + (2 × 103) + (5 × 102) + (4 × 101)
    C. (1 × 105) + (30 × 104) + (2 × 102) + (5 × 101) + (4 × 100)
    D. (1 × 105) + (3 × 104) + (2 × 102) + (5 × 101) + (4 × 100)
    Hint

  5.   Find y for y = x2 - 15 if x = 6.
    A. 21 B. -3
    C. 49 D. 51
    Hint