Simplify.

A.
B.
C.
D.


Answer: B

Mathematics

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Express the given function as a composite of functions f and g such that y = f(g(x)).y = 

A. f(x) = , g(x) = x2 - 4
B. f(x) = , g(x) = - 
C. f(x) = , g(x) = x - 4
D. f(x) = , g(x) = x2 - 4

Mathematics

Solve the equation.10y = 4y + 6 + 5y

A. {-60} B. {60} C. {6} D. {-6}

Mathematics

Solve the problem.A 53 mph wind is blowing toward the north. At what speed should a plane head due east to be on a bearing of E 62.6° N? Find the ground speed of the plane.

A. 230 mph B. 115 mph C. 60 mph D. 173 mph

Mathematics

Solve the problem.Assuming equal costs, when warehouse workers use hand trucks to load a trailer, it costs the management  for labor for each trailer. After management purchases a forklift for , it costs only  for labor to load each trailer. Write the equation that models the cost, C(n), of loading n trailers with a hand truck, and the cost, C(n), of loading n trailers with the forklift. Then, solve this system using an algebraic approach.

A. Cost using hand trucks: C(n) = 50n Cost using forklift: C(n) = 2100 + 25n n = 82 B. Cost using hand trucks: C(n) = 25n Cost using forklift: C(n) = 2100 + 50n n = 82 C. Cost using hand trucks: C(n) = 25n Cost using forklift: C(n) = 2100 + 50n n = 84 D. Cost using hand trucks: C(n) = 50n Cost using forklift: C(n) = 2100 + 25n n = 84

Mathematics