Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.(-2 + 2i
)3
A. -2 + 2i
B. 8 + 6i
C. 8
D. 64
Answer: D
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Solve the problem.Sue wants to add a decorative wallpaper border to her living room. Refer to the diagram below for the dimensions of Sue's living room. How many feet of wallpaper border will she need?
A. 60 ft B. 66 ft C. 54 ft D. 63 ft
A point P(x, y) in rectangular coordinates is given. Determine the polar coordinates 
such that 
and 
(4, -4)
A. 
B. 
C. 
D. 
Solve the problem.A ball is thrown vertically upward at an initial speed of 
Its height (in feet) after t seconds is given by h(t) = t(80 - 16t)What is the maximum height attained by the ball?
A. 100 feet B. 133.3 feet C. 200 feet D. 88.9 feet
Solve the problem.Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is P = P0 e-0.0244t. How long will it take for 15 grams of strontium to decay to 5 grams? Round answer to 2 decimal places.
A. 45.03 years. B. 4.50 years C. 40.50 years D. 450.25 years