Solve the problem.According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 15 volts are applied, the current is 4 amperes. What is the current when 21 volts are applied?
A. 3.75 amperes
B. 40 amperes
C. 5.6 amperes
D. 78.75 amperes
Answer: C
Mathematics
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Solve the problem.If f(x) = 3x - 6 and g(x) = -7x2 + 2x - 2, find g(f(8)).
A. -1308 B. -2234 C. -92 D. -132
Mathematics
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Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(3, 3); m = - 3
A. y = -3x + 
B. y = - 
x + 12
C. y = -3x + 12
D. y = -3x - 12
Mathematics
Graph the numbers on a number line.{-7, -5, -3, -1}
A. 
B. 
C. 
D. 
Mathematics