Given the set sketched on the number line, identify the type of interval (open, closed, half-open, open infinite, closed infinite), write the set using set-builder notation, and write the set using interval notation.
A. open infinite interval; {x|x < -2}; (-?, -2)
B. closed infinite interval; {x|x ? -2}; (-?, -2]
C. open infinite interval; {x|x > -2}; (-2, ?)
D. closed infinite interval; {x|x ? -2}; [-2, ?)
Answer: D
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Find zw or 
as specified. Leave your answer in polar form.z = 1 + iw = 1 - 
iFind 
.
A. 
(cos 15° + i sin 15°)
B. 
(cos 105° + i sin 105°)
C. 
(cos 105° + i sin 105°)
D. 
(cos 15° + i sin 15°)
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.7
A. Complex B. Nonreal complex C. Complex, pure imaginary, nonreal complex D. Real, complex
Find the volume of the specified solid. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.A sphere with radius 5 cm
A. 294.4 cm3 B. 4186.7 cm3 C. 523.3 cm3 D. 104.7 cm3
Solve the problem.Janice is running a 8501 meter race. Assume that she runs at a constant speed of 295 meters per minute. Find the rule of the function f(t) that gives her distance from the finishing line t minutes after the start of the race.
A. f(t) = 295t
B. f(t) = 8501 - 
C. f(t) = 8501 + 295t
D. f(t) = 8501 - 295t