Simplify. Assume that variables can represent any real number.
A. 6
k3q4
B. 6
k2
q8
C. 6
k2
q4
D. 6k3q4 
Answer: C
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Find the requested measurement. Use ? ? 3.14 and round your answer to the nearest hundredth.Find the area of the circle.
A. 43.96 cm2 B. 21.98 cm2 C. 153.86 cm2 D. 38.47 cm2
Solve the problem.Matthew has saved a total of $28,000, of which $5600 is invested in the stock market. What percent of his total savings is invested in the stock market?
A. 15% B. 25% C. 30% D. 20%
Multiply.(-5x - 2)2
A. -5x2 + 20x + 4 B. -5x2 + 4 C. 25x2 + 20x + 4 D. 25x2 + 4
Solve.An electronic circuit connected to a speaker emits a pure tone with a waveform given by y = yo sin
. Interestingly, this tone can be rendered (nearly) inaudible by placing a second speaker on top of the first and emitting a tone through the second speaker that has a phase shift of ? relative to the first speaker's waveform. Which waveform below would you choose for this second speaker?
A. y = yo sin
B. y = yo sin
C. y = yo sin
D. y = 
sin