Solve graphically.x + 4 = 2yx - 4 = 2y
A. (-4, 0)
B. (0, 2)
C. Infinitely many solutions
D. No solution
Answer: D
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Solve.9x2 + 36x + 11 = 0
A. - 
, - 
B. 
, 
C. - 
, 
D. - 
, - 
Which of the following physical situations would best be modeled by the graph?
A. The length y of a shadow cast by a horizontal flagpole on a vertical wall between sunrise and noon, where t is the angle shown.
B. The monthly average ocean temperature y in degrees Fahrenheit during month t, where t = 1 corresponds to January.
C. The number of hours y of sunlight during month t, where t = 1 corresponds to January.
D. The length y of a shadow cast by a tree between sunrise and noon, where t is the angle of elevation of the sun.
Solve the problem.The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 
has a resistance of 
What would the resistance be for a 
length, with diameter 
of the same kind of wire ?
A. 702 ohms B. 690 ohms C. 683 ohms D. 687.5 ohms
Find an equation for the graph.
A. y = 
cos 
B. y = 
cos 
C. y = cos (4x)
D. y = 
cos (4x)