Simplify the expression.
A. 
B. 
C. 8
D. 3
Answer: B
You might also like to view...
Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers stand 40 inches apart. At a point between the towers and 14 inches along the road from the base of one tower, the cable is 0.36 inches above the roadway. Find the height of the towers.
A. 3.5 in. B. 4.5 in. C. 4 in. D. 6 in.
Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution. x + y + z + w = 7 3x - 2z + 5w = 11-4x + 3y + w = 4 -x - y - z - w = 6
A. ?
B. 
C. 
D. 
Solve the problem.The speed of a stream is 4 mph. If a boat travels 94 miles downstream in the same time that it takes to travel 47 miles upstream, what is the speed of the boat in still water?
A. 8 mph B. 12 mph C. 14 mph D. 15 mph
Express the given function H as a composition of two functions f and g such that H(x) = (f ? g)(x).H(x) = (9x + 16)5
A. f(x) = 9x5, g(x) = x + 16 B. f(x) = (9x)5, g(x) = 16 C. f(x) = x5, g(x) = 9x + 16 D. f(x) = 9x + 16, g(x) = x5