Solve the problem.The current in the circuit is 9.55 mA. Determine the phase angle for the combination of the capacitor, resistor, and inductor. XC = 1550 ? R = 1700 ? XL = 2200 ? 
?? I
A. ? = -17.88°
B. ? = 0.37°
C. ? = 20.92°
D. ? = 65.61°
Answer: C
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Solve the problem.A rock falls from a tower that is 256 feet high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
Round to the nearest tenth, if necessary.
A. 16 sec B. 4 sec C. 4096 sec D. 15.5 sec
Solve the variation problem.The weight of an object on the moon varies directly as its weight on earth. A person who weighs 123 lb on earth weighs 24.6 lb on the moon. How much would a 186-lb person weigh on the moon?
A. 37.2 lb B. 0.2 lb C. 930 lb D. 333.6 lb
Factor completely. If the polynomial is prime, so state.3x3 + 17x2 + 20x
A. x(3x + 4)(x + 5) B. x(x + 4)(3x + 5) C. 3x(x + 4)(x + 5) D. prime
Solve the equation.
= 
A. 3 B. 1 C. -1 D. -3