Without graphing the function, determine its amplitude or period as requested.y = cos 3xFind the period.
A. 3
B. 1
C. 2?
D. 
Answer: D
Mathematics
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Solve the equation.d - 5 = -18
A. 13 B. -23 C. -13 D. 23
Mathematics
Solve.The speed of a vehicle varies inversely as the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 20 miles per hour in 35 minutes, how fast must it travel to cover the same distance in 25 minutes?
A. 
mph
B. 28 mph
C. 
mph
D. 
mph
Mathematics
Simplify. Assume that each variable is nonnegative.
A. 
B. 7
C. 7
D. 
Mathematics
Factor. Check by multiplying.10x - 8y + 6
A. 2(5x - 4y + 3) B. 2(x + y) + 6 C. 2(5x - 8y + 3) D. 2(5x - 8y + 6)
Mathematics