Solve the problem.If sin ? = -0.3, find the value of sin ? + sin (? + 2?) + sin (? + 4?).
A. -0.9
B. -0.3
C. 1.1
D. -0.9 + 6?
Answer: A
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Evaluate the expression.
A. 
B. 24,024
C. 3,632,428,800
D. 1001
Express as a sum of logarithms.log10xy
A. log10x - log10y B. log10x + log10y C. log5x - log5y D. log5x + log5y
Solve the problem.The blade of a windshield wiper sweeps out an angle of 135° in one cycle. The base of the blade is 12 inches from the pivot point and the tip is 32 inches from the pivot point. What area does the wiper cover in one cycle? (Round to the nearest 0.1 square inch.)
A. 1041.8 in2 B. 1036.7 in2 C. 1105.3 in2 D. 948.3 in2
Solve the problem.Andrea is having her yard landscaped. She obtained an estimate from two landscaping companies. Company A gave an estimate of $190 for materials and equipment rental plus $50 per hour for labor. Company B gave an estimate of $260 for materials and equipment rental plus $40 per hour for labor. Create a cost equation for each company where y is the total cost of the landscaping and x is the number of hours of labor. Determine how many hours of labor will be required for the two companies to cost the same.
A. 10 hr B. 11 hr C. 7 hr D. 6 hr