Provide an appropriate response.Which of the following pairs of parametric equations will graph a semicircle?
A. x = cos t, y = sin t, 0 ? t ? 
B. x = cos 
t, y = sin 
t, 0 ? t ? ?
C. x = cos 2t, y = sin 2t, 0 ? t ? ?
D. x = cos 
t, y = sin 
t, 0 ? t ? 4?
Answer: D
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Provide an appropriate response.Perform the indicated operation, leaving the answer in lowest terms: 7 × 
=
A. 
B. 
C. 2
D. 
Find the domain of the function.g(x) = 
A. {x|x ? 0} B. all real numbers C. {x|x > 1} D. {x|x ? -1, 1}
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A. 9.43488 × 1062 joules B. 9.43488 × 1068 joules C. 9.43488 × 1032 joules D. 9.43488 × 1026 joules
Convert the angle in degrees to radians. Express the answer in decimal form, rounded to two decimal places.-258°
A. -4.47 B. -4.5 C. -4.49 D. -4.48