Solve the problem.To solve the rational inequality 
? 2, you can first write the inequality with 0 on one side and the other side expressed as a single fraction. What value or values of x make the numerator of that fraction equal to 0?
A. {3}
B. {-2}
C. {2, 3}
D. {2}
Answer: D
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Identify the equation as either an identity or not.
= 2 cos 2x
A. Not an identity B. Identity
Solve the formula for the indicated variable. Then use the supplied values to solve the equation.The energy W stored by a capacitor is given by W = 
QV, where V is the voltage across the capacitor's terminals after Q coulombs of electricity have been transferred from one of the capacitor's plates to the other. Solve for Q. How many coulombs have been transferred if W is 0.47 watts and V is 15.8 volts? (All values are approximate.)
A. Q = 
= 3.7 coulombs
B. Q = 
= 0.059 coulombs
C. Q = 2WV = 15 coulombs
D. Q= W2V = 3.5 coulombs
Solve the problem.Draw the segment whose endpoints are P and Q. Name the segment in two ways.
A. 
or 
B. 
or 
C. 
PQ or QP
D. 
or 
Decide whether the slope is positive, negative, zero, or undefined.
A. Undefined B. Positive C. Negative D. Zero