Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.[8(cos 30° + i sin 30°)][3(cos 90° + i sin 90°)]
A. -1.0000 + 1.7321i
B. -12.000 + 20.7846i
C. -0.5000 + 0.8660i
D. -5.5000 + 9.5263i
Answer: B
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Factor the polynomial.48t3 + 6t2 - 42t
A. 6t(8t2 + t - 7) B. t(48t2 + 6t - 42) C. 6(8t3 + t2 - 7t) D. 6t(8t2 + 6t - 42)
Find the solution set for the system by graphing both of the system's equations in the same rectangular coordinate system and finding points of intersection.(y - 4)2 = x + 16 y = - 
x 
A. {(16, -4), (0, 0)} B. {(-16, 0), (4, 0)} C. {(-16, 4)} D. {(-16, 4), (0, 0)}
Sketch the curves without any technological help.
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; 
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A. ?
B. ?
C. ?
D. ?
E. ?
Write the number in words.24,807
A. Two hundred forty-eight thousand, seven B. Two thousand, four hundred eighty-seven C. Two million, forty-eight thousand, seven D. Twenty-four thousand, eight hundred seven