Write the expression in terms of sines and/or cosines, and then simplify.
A. 
B. 
C. cos ? - sin ?
D. 
Answer: B
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Subtract the polynomials.(x4 - 1) - (9x4 + 5x + 8)
A. -8x4 + 5x - 9 B. -8x4 - 5x - 9 C. 8x4 - 5x - 9 D. -8x4 - 5x - 7
Solve the problem.The charges for renting a moving van are $55 for the first 20 miles and $8 for each additional mile. Assume that a fraction of a mile is rounded up. (i) Determine the cost of driving the van 97 miles. (ii) Find a symbolic representation for a function f that computes the cost of driving the van x miles, where 
(Hint: express f as a piecewise-constant function.)
A. $671;
f(x) = 
B. $991;
f(x) = 
C. $671;
f(x) = 
D. $5951;
f(x) = 
Identify the figure as a line, a ray, a line segment, or an angle. Then name the figure using the given points.
A. line; 
B. angle; ?ZXV or ?VXZ or ?X
C. line segment; 
D. ray; 
Subtract. 9x5 + 17x3 - 10
A. 9x8 B. 4x5 + 22x3 + 10 C. 4x5 + 35x3 - 30 D. 4x5 + 35x3 + 10