Find the x- and y-intercepts of the graph of the given equation, if they exist. Then graph the equation.y = 7
A. x: 7; y: none
B. x: none; y: 7
C. x: 7; y: none
D. x: none; y: 7
Answer: B
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Find the exact value of the expression.cos
A. 
B. 
C. 
D. 
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.-2x + 9y = -13-4x + 18y = -15
A. (2, -1) B. (2, 5) C. (-13, 5) D. No solution
Solve the polynomial inequality. Express the solution in interval notation.(x + 6)(x - 3)(x - 4) > 0
A. (-?, 3) B. (-6, 3) ? (4, ?) C. (4, ?) D. (-?, -6) ? (3, 4)
Solve the problem.The power that a resistor must dissipate is jointly proportional to the square of the current flowing through the resistor and the resistance of the resistor. If a resistor needs to dissipate 
of power when 
of current is flowing through the resistor whose resistance is 
find the power that a resistor needs to dissipate when 
-4.0px;" /> of current are flowing through a resistor whose resistance is 
A. 252 watts
B. 126 watts
C. 294 watts
D. 42 watts