Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.
5
A. -128 + 128i
B. - 
+ 
i
C. -64 + 64i
D. -64
+ 64
i
Answer: A
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Multiply.(4 + x)(4 - x)
A. 16 + 8x - x2 B. 8 - x2 C. 16 - 8x - x2 D. 16 - x2
Provide an appropriate response.Let A = 
, where b and a are nonzero constants. Find A-1.
A. 
B. 
C. 
D. 
Solve the problem. Round your answer, as needed.If a boat uses 17 gallons of gas to go 78 miles, how many miles can the boat travel on 68 gallons of gas?
A. 19 miles B. 624 miles C. 312 miles D. 332 miles
Solve the problem.The winning speeds for the Grayslake 250 race from 1980-1992 are approximated by the linear equation 
In the model, x = 0 corresponds to 1980, x = 1 to 1981, and so on. A portion of the graph of the equation is shown on the accompanying screen, along with the coordinates of a point on the line. How can this point be interpreted in the context of the model?
A. It means that the winning speed in the year 1990 will be the same as in the year 2203. B. It means that the winning speed was between 10 and 224 miles per hour. C. It means that in the year 1990, the winning speed was approximately 224 miles per hour. D. It means that 10 years from now, the winning speed will be approximately 224 miles per hour.