Find the rectangular form for the indicated power of the complex number.z5; z = 2 - 2i
A. -128 + 128i
B. -64 + 64i
C. -64
+ 64
i
D. - 
+ 
i
Answer: A
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Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Solve the problem. First use front end rounding. Then find the exact answer.There are 27,878,400 square feet in one square mile. How many square feet are there in 68 square miles?
A. Estimate: 1,960,000,000 square feet; exact: 1,895,704,000 square feet B. Estimate: 1,960,000,000 square feet; exact: 1,895,731,200 square feet C. Estimate: 2,100,000,000 square feet; exact: 1,895,731,200 square feet D. Estimate: 2,100,000,000 square feet; exact: 1,895,704,000 square feet
Determine whether the ordered pair given is a solution of the linear inequality in two variables.x + 2y < -6; (0, 0)
A. Yes B. No
Factor the polynomial completely. If the polynomial cannot be factored, write "prime."xy2 + 2y2 - 16x - 32
A. (x + 2)(y + 4)(y - 4) B. (x - 2)(y + 4)(y - 4) C. (x + 2)(y - 4)2 D. (x + 2)(y2 - 16)