Express the product as a sum containing only sines or cosines.sin(7?) cos(3?)
A. sin cos(21?2)
B. 
[sin(10?) + cos(4?)]
C. 
[cos(10?) - cos(4?)]
D. 
[sin(10?) + sin(4?)]
Answer: D
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Multiply and then, if possible, simplify by factoring.
A. 2x3
B. 2x6
C. 4x3
D. 2
Solve the problem.The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 25 miles per hour in 30 minutes, how fast must it travel to cover the same distance in 15 minutes?
A. 18 mph
B. 
mph
C. 
mph
D. 50 mph
Use the given conditions to write an equation for the line in the indicated form.Passing through (3, 4) and parallel to the line whose equation is 
;point-slope form
A. y - 4 = 2(x - 3) B. y = 2x C. y - 3 = 2(x - 4) D. y - 4 = x - 3
Find all solutions by factoring.x2 + 5x - 14 = 0
A. {-2, 7} B. {-7, -2} C. {2, 7} D. {-7, 2}