Identify the figure as a line, a ray, a line segment, or an angle. Then name the figure using the given points.
A. ray;
B. ray; 
C. line segment; 
D. line; 
Answer: A
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Solve the problem.A boat is sailing directly toward a lighthouse that is 90 ft tall. The angular size ? of the lighthouse is the angle formed by the lines from the top and bottom of the lighthouse to the observer on the boat, as shown in the figure. What is the rate of change of the angular size d?/dx when the boat is 300 feet from the lighthouse?
A. -0.00010 rad/ft B. 0.00526 rad/ft C. -0.00917 rad/ft D. -0.00092 rad/ft
Determine if the given ordered pair is a solution of the equation.x + 3 = 0; (-3, 4)
A. Not a solution B. A solution
Solve the problem.The profit that the vendor makes per day by selling x pretzels is given by the function 
Find the number of pretzels that must be sold to maximize profit.
A. 400 pretzels B. 200 pretzels C. 100 pretzels D. 800 pretzels
Graph the parabola.f(x) = -2x2 + 2x - 4
A. 
B. 
C. 
D. 