Solve the problem.If f(x) = , find f(-2).

A. 2
B. 1
C. -2
D. 0


Answer: A

Mathematics

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Solve the problem.Suppose that z varies jointly with x and y and that z = 22.5 when x = 9 and  Find the constant of proportionality k. Then, find z when x = 5 and 

A. k = 0.3; z = 13.5
B. k = 1012.5; z = 
C. k = 0.5; z = 22.5
D. k = 5; z = 225

Mathematics

Determine whether the graph has a Hamilton circuit.

A. No B. Yes

Mathematics

Solve.A ship leaves port traveling at 25 miles per hour. Three hours later a speedboat leaves the same port traveling at 45 miles per hour. How long will it take for the speedboat to overtake the ship?

A. 3 hr
B.  hr
C. 1 hr
D. 1 hr

Mathematics

Find the exact value of the indicated trigonometric function of ?, if ? is an angle in standard position whose terminal side contains the given point.(21, 28); find cos ?.

A.
B.
C.
D.

Mathematics