Solve the problem.If the voltage, V, in an electric circuit is held constant, then the current, I, is inversely proportional to the resistance, R. If the current is 420 milliamperes (mA) when the resistance is 4 ohms, find the current when the resistance is 28 ohms.
A. 2933 mA
B. 2940 mA
C. 240 mA
D. 60 mA
Answer: D
Mathematics
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A. y = - 10x + 
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Use the compound interest formulas A = P
nt and A = Pert to solve.Find the accumulated value of an investment of $13,000 at 4% compounded semiannually for 9 years.
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Use the given conditions to write an equation for the line in slope-intercept form.Passing through (5, 4) and perpendicular to y = 
x + 2
A. y = 4x - 24
B. y = - 4x + 24
C. y = - 
x - 6
D. y = - 4x - 24
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Evaluate the expression, given x = -2, y = 3, and a = -4.-2x - 7y - 5a
A. 28 B. -3 C. 3 D. 17
Mathematics