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
Answer: D
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Perform the indicated operations. Express the answer as a single polynomial in standard form.12x4(7x6 - 4x2 - 12)
A. 84x10 - 4x2 - 12 B. 84x6 - 48x2 - 144 C. 84x10 - 48x6 - 144x4 D. 84x10 - 48x6
Solve the problem.The graph of f(x) = x3 - x2 - 8x + 12 is shown below. Use the graph to factor f(x).
A. f(x) = -(x + 3)(x - 2)2 B. f(x) = (x + 3)(x - 2)2 C. f(x) = (x - 3)(x + 2)2 D. f(x) = x(x + 3)(x - 2)
Find the average rate of change for the function over the given interval.Find the average rate of change from (-1, 3) to (2, -3).
A. 2
B. - 
C. 
D. -2
Solve each problem.Find two numbers whose sum is 450 and whose product is as large as possible.
A. 10 and 440 B. 224 and 226 C. 225 and 225 D. 1 and 449