Solve the equation by factoring.81t3 - 4t = 0
A. 
B. 
C. 
D. {0}
Answer: B
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Solve the problem.A private airplane leaves an airport and flies due east at 175 mph. Two hours later, a jet leaves the same airport and flies due east at 315 mph. When will the jet overtake the plane?
A. 1
hr
B. 2
hr
C. 4
hr
D. 
hr
Solve the problem.Roberto invested some money at an APR of 8 percent, and then invested $4,000 more than twice this amount at an APR of 10 percent. His total annual income from the two investments was $4,600. How much was invested at 10 percent?
A. $30,000 B. $3,400 C. $34,000 D. $12,000
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = - 
, 
< ? < 2?Find sin(2?).
A. 
B. 
C. - 
D. - 
Solve.A painting in a museum is 180 centimeters wide. Convert this width to inches. Round answer to the nearest hundredth, if necessary.
A. 457.2 in. B. 70.87 in. C. 54.88 in. D. 590.4 in.