Graph the inequality.3x + y ? 3
A. 
B. 
C. 
D. 
Answer: B
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Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.-6x - 7y = -24-4x + 4y = -16
A. (4, 1) B. (3, 1) C. (4, 0) D. No solution
Solve the problem.The power dissipated in an electric circuit is given by the expression 
where R is the resistance of the circuit and I is the current through the circuit. For a sinusoidal alternating current, the current might be represented by the relation 
where A is the amplitude, f is the frequency, and t is time. Write an expression for P involving the sine function, and use a fundamental identity to write P in terms of the cosine function.
A. P = RA sin2(2?f t) ; P = RA - cos2(2?f t) B. P = RA2 sin2(2?f t) ; P = - RA2 cos2(2?f t) C. P = RA2 sin2(2?f t) ; P = RA2 - RA2 cos2(2?f t) D. P = RA sin2(2?f t) ; P = RA - RA cos2(2?f t)
Factor completely. If the polynomial cannot be factored, write prime.x2 + 39x + 40
A. (x - 10)(x + 4) B. (x + 10)(x - 4) C. (x + 40)(x - 1) D. Prime
Find the probability.Two dice are rolled. Find the probability that the score on the dice is either 5 or 10.
A. 
B. 
C. 
D. 