Solve the equation by factoring.x2 + 4x = 0
A. {0, 4}
B. {4}
C. {- 4}
D. {0, - 4}
Answer: D
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Solve the problem.A piece of cable which is 
m long is to be cut into pieces 
m long. How many pieces will there be?
A. 50 pieces
B. 4 pieces
C. 
piece
D. 20 pieces
Solve the problem. Round your answer to two decimal places.According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 28 volts are applied, the current is 4 amperes. What is the current when 10 volts are applied?
A. 70 amperes B. 42 amperes C. 7 amperes D. 1.43 amperes
Solve the problem. All of the values of functions g and f are shown in the given table.Find (g?f)(1)
A. -7 B. 6 C. 8 D. -4
Multiply the following binary numbers.
A. 11000110 B. 10101010 C. 10110100 D. 11101000 E. 10100110