Use the appropriate sum or difference identity to write the given expression as a function of x alone.sin (x + 2?)
A. 
cos x + 
sin x
B. sin x
C. -cos x
D. 
cos x - 
sin x
Answer: B
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Solve the problem.Find the mass of a sphere of radius 4 if 
k a constant.
A. 16k? B. 64k? C. 512k? D. 256k?
Solve the problem.A point A on an island is 3.4 km from the nearest point B on the coast of the mainland. (Assume that the coast is straight.) A person in a motorboat travels straight from A to a point on the beach x km from B and then travels x km farther along the beach away from B. Find x if the person traveled a total of 5.8 km.
A. 1.0 B. 0.4 C. 1.9 D. 0.2
Perform the indicated clock arithmetic.10 ? 12 (12-hr clock)
A. 10 B. 0 C. 120 D. 12
Provide an appropriate response.When distributing 35 through the parenthetic expression 35(H - 8), only H is multiplied by 35.
A. True B. False