The graph of an exponential function is given. Match the graph to one of the following functions. 
A. f(x) = 3x - 1
B. f(x) = 3x
C. f(x) = 3x - 1
D. f(x) = 3x + 1
Answer: B
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Determine whether the figure is a polygon. If the figure is not a polygon, state what part of the definition fails.
Fill in the blank(s) with the appropriate word(s).
Solve the problem. Round your answer, if appropriate.One airplane is approaching an airport from the north at 140 km/hr. A second airplane approaches from the east at 265 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 30 km away from the airport and the westbound plane is 21 km from the airport.
A. -534 km/hr B. -133 km/hr C. -400 km/hr D. -267 km/hr
Multiply. 
A. 0.0486 B. 48.6 C. 0.486 D. 4.86
Verify the identity.cot (? - x) = - cot x
What will be an ideal response?