Find the area of a sector of a circle having radius r and central angle ?. If necessary, express the answer to the nearest tenth.r = 4.0 ft, ? = 
radians
A. 4.2 ft2
B. 8.8 ft2
C. 33.5 ft2
D. 16.8 ft2
Answer: D
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Solve the problem.When an object weighing 5 pounds is attached to the lowest point P of a spring that hangs vertically, the spring is extended 6 inches. The 5-pound weight is replaced by a 3-pound weight, and the system is allowed to come to equilibrium. The 3-pound weight is then pulled downward another 15 feet and then released. Find the equation of motion. Neglect friction.
A. y = 15 cos 10.328t B. y = 15 cos 1.826t C. y = 15 cos 106.667t D. y = 15 cos 2.981t
Solve the equation using the zero product property.(x - 7)(2x + 19) = 0
A. 
B. 
C. 
D. 
Simplify the complex number to its rectangular form.4j5 - 1
A. 4j - 1 B. 3j C. 3 D. -4j - 1
Find an equation of the line passing through the two given points.(-9, -2) and (-9, -1)
A. y = -9 B. y = x - 9 C. y = x + 9 D. x = -9