Solve the equation.(7 - 0.8x)(5 - 0.5x) = 0
A. 8.75, 10
B. 7, 5
C. 0.8, 5
D. 8.75, 0.25
Answer: A
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Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.(-
+ i)6
A. -64
B. -64
+ 64i
C. 64i
D. 64 - 64
i
What is the domain of f(x)? What is its range?f(x) = 
A. Domain: (-?, -9) ? (-9, ?); range: (0, ?) B. Domain: (-?, 0) ? (0, ?); range: (-?, 9) ? (9, ?) C. Domain: (-?, 0) ? (0, ?); range: (-?, -9) ? (-9, ?) D. Domain: (-?, -9) ? (-9, ?); range: (-?, 0) ? (0, ?)
Solve the problem.The Earth rotates about its pole once every 24 hours. The distance from the pole to a location on Earth 35° north latitude is about 3,243.8 miles. Therefore, a location on Earth at 35° north latitude is spinning on a circle of radius 3,243.8 miles. Compute the linear speed on the surface of the Earth at 35° north latitude.
A. 849 mph B. 20,381 mph C. 795 mph D. 135 mph
The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval.(-2, ?)
A. decreasing B. constant C. increasing