Solve the problem.The equation y = 0.003x + 0.50 can be used to determine the approximate profit, y in dollars, of producing x items. How many items must be produced so the profit will be at least $2937?
A. x ? 978,834
B. 0 < x ? 978,833
C. x ? 979,167
D. x ? 978,834
Answer: A
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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
Find the product. Write the answer in standard form.7i(5 - 5i)
A. 35i + 35i2 B. 35 + 35i C. 35i - 35 D. - 35i - 35i2
Solve the problem.Suppose that the function y = f(x) is increasing on the interval (4, 6). Over what interval is the graph of 
increasing?
A. (-4, -2) B. (32 , 48) C. (4, 6) D. (12, 14)
Write the expression as the logarithm of a single number or expression with a coefficient of 1. Assume all variables represent positive numbers.log 15 - log 5
A. log 
B. log 8
C. log 10
D. log 3