Multiply. Express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
Answer: D
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Determine if the given polar coordinates represent the same point.(1, ?/4), (-1, -?/4)
A. No B. Yes
Solve the problem.A person spent 1.1 h in a car going to an airport, 2.15 h flying in a jet, and 0.29 h in a taxi to reach the final destination. The jet's speed averaged 13.0 times that of the car, which averaged 19.0 mi/h more than a taxi. What was the average speed of each if the trip covered 1267.846 mi?
A. Car: 43.4 mi/h, jet: 564 mi/h, taxi: 62.4 mi/h B. Car: 24.4 mi/h, jet: 564 mi/h, taxi: 43.4 mi/h C. Car: 44 mi/h, jet: 565 mi/h, taxi: 24.4 mi/h D. Car: 43.4 mi/h, jet: 564 mi/h, taxi: 24.4 mi/h
Identify where f is increasing or where f is decreasing, as indicated. Round your answer to two decimal places when appropriate.f(x) = -3x2 + 6x - 1; decreasing
A. (-?,1] B. [1, ?) C. (-?, -1] D. [-1, ?)
Find the amplitude.y = -4 cos(3?x - 3)
A. 3? B. ? C. 4 D. -12