Solve the problem.ABC phone company charges $21 per month plus 3¢ per minute of phone calls. XYZ phone company charges $12 per month plus 6¢ per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company the better deal?
A. Less than 30 minutes
B. More than 300 minutes
C. Less than 300 minutes
D. More than 30 minutes
Answer: C
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Solve the problem.Suppose that the velocity of a falling body is v = ks2 (k a constant) at the instant the body has fallen s meters from its starting point. Find the body's acceleration as a function of s.
A. a = 2ks2 B. a = 2k2s3 C. a = 2ks D. a = 2ks3
Solve the problem.While in Manhattan, Leslie and Keith Evans plan to leave their hotel and make a quick tour of the Metropolitan Museum of Art, the New York City Museum, and the American Museum of Natural History. The distances between these locations are as follows: hotel to Metropolitan Museum of Art is 5 blocks; hotel to New York City Museum is 3 blocks; hotel to American Museum of Natural History is 7 blocks; from the Metropolitan Museum of Art to the New York City Museum is 8 blocks; from the Metropolitan Museum of Art to the American Museum of Natural History is 4 blocks; from the New York City Museum to the American Museum of Natural History is 11 blocks. What is the minimum distance Leslie and Keith can travel to visit the three destinations and return to the hotel?
A. 18 blocks B. 31 blocks C. 23 blocks D. 22 blocks
Combine where possible.-9
- 3
+ 10
A. -32
B. -9
C. -6
D. 6
A spectator watches a rowing race from the edge of a river bank. The lead boat is moving in a straight line that is 330 ft from the river bank. If the boat is moving at a constant speed of 50 ft/sec, how fast is the boat moving away from the spectator when it is 560 ft past her? ?
A. 18.63 ft/sec B. 43.08 ft/sec C. 61.95 ft/sec D. 73.01 ft/sec