1.   Name another pair of polar coordinates that represent point S(5, 120°) with the restriction that -360°360°.
    A. (5, -240°) B. (5, -120°)
    C. (5, 330°) D. (5, -30°)
    Hint

  2.   Which equation could represent a rose with 5 petals?
    A. B.
    C. D.
    Hint

  3.   What is the conjugate of 9 2i?
    A. 9 B. 2 9i
    C. 2 + 9i D. 9 + 2i
    Hint

  4.   Simplify (2 3i) ÷ (1 + i).
    A. B.
    C. D.
    Hint

  5.   Find the quotient . Express the result in rectangular form.
    A. -4i B. 4i
    C. 4 D. -4
    Hint

  6.   The point P with polar coordinates can also be represented in polar coordinates as __________.
    A. B.
    C. D.
    Hint

  7.   Which equation could represent a lemniscate?
    A.
    B. r = 4 cos 4
    C. r = 4 sin 2
    D.
    Hint

  8.   Find the rectangular coordinates of the point R.
    A. B.
    C. D.
    Hint

  9.   Find the polar coordinates of the point P(8, -2).
    A. B.
    C. (10, -4) D.
    Hint

  10.   Write the polar equation 7 = r cos (- 2.3) in rectangular form, rounding the coefficients of x and y to the nearest hundredth.
    A. 0.67x - 0.75y + 7 = 0
    B. -0.75x - 0.67y - 7 = 0
    C. 0.75x - 0.67y - 7 = 0
    D. 0.75x + 0.67y + 7 = 0
    Hint

  11.   Which of the following is the graph of the equation 4 = -r cos ( - 58°)?
    A.
    B.
    C.
    D.
    Hint

  12.   Express the complex number -9 4i in polar form.
    A.
    B.
    C.
    D.
    Hint

  13.   Express the number in rectangular form.
    A. B.
    C. D.
    Hint

  14.   Find the product 3 (cos 2.8 + i sin 2.8) · 5 (cos 0.6 + i sin 0.6). Express the answer in rectangular form, approximating a and b to the nearest hundredth.
    A. -8.83 + 12.13i
    B. -0.87 + 7.95i
    C. -1.63 + 14.91i
    D. -14.50 - 3.83i
    Hint

  15.   Find .
    A. B. 10i
    C. 1000i D.
    Hint

  16.   Solve the equation x4 - 81 = 0.
    A. 3, -3, , -
    B. 3, -3i, ,
    C. 3, -3, 3i, -3i
    D. 3, 3i, ,
    Hint