Solve the variation problem.If the voltage, V, in an electric circuit is held constant, the current, I, is inversely proportional to the resistance, R. If the current is 140 milliamperes when the resistance is 5 ohms, find the current when the resistance is 35 ohms.
A. 20 milliamperes
B. 980 milliamperes
C. 100 milliamperes
D. 973 milliamperes
Answer: A
Mathematics
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Graph on the number line, and express in interval notation.The set of all real numbers greater than or equal to 4.
A. (-?, 4]
B. (4, ?)
C. [4, ?)
D. (-?, 4)
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Solve the equation.
x + 
= 
x
A. {2} B. {-14} C. {14} D. {-2}
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Determine whether the equation defines y as a function of x. y = ± 
A. function B. not a function
Mathematics
Express the graph shown using interval notation. Also express it as an inequality involving x.
A. (-?, -1) x < -1 B. (-?, -1] x ? -1 C. (-1, ?) x > -1 D. [-1, ?) x ? -1
Mathematics