Use an identity to write the expression as a single trigonometric function or as a single number.
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.A barge takes 4 hours to move (at a constant rate) downstream for 40 miles, helped by a current of 3 miles per hour. If the barge's engines are set at the same pace, find the time of its return trip against the current.
A. 7 hours B. 4 hours C. 10 hours D. 80 hours
Graph both functions using the same set of axes.f(x) = 2x, f-1(x) = log2x
A. f(x)
B. f(x)
C. f(x)
D. f(x)
Use the RTSC Approach to solve the application.One side of a triangle is 6 cm shorter than the base, x. The other side is 
longer than the base. What lengths of the base will allow the perimeter of the triangle to be at least 44 cm?
A. The base must be greater than 0 cm and less than or equal to 15 cm. B. The base must be less than or equal to 20 cm. C. The base must be greater than or equal to 15 cm. D. The base must be greater than 9 cm.
Rewrite as a base to a power, if possible.
A. 1
B. a6
C. 
D. Cannot be simplified