Find numbers a and b, or k, so that f is continuous at every point.
A. a = 4, b = 3
B. a = -4, b = -3
C. impossible
D. a = 4, b = -3
Answer: D
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Solve the problem.The spring of a spring balance is 5.0 in. long when there is no weight on the balance, and it is 8.3 in. long with 9.0 lb hung from the balance. How much work is done in stretching it from 5.0 in. to a length of 14.6 in.?
A. 130 in.-lb B. 13 in.-lb C. 260 in.-lb D. 17 in.-lb
Find the opposite of the number.16
A. 
B. -16
C. 0
D. 16
Solve.A plane flying with a tailwind flew at a speed of 460 mph, relative to the ground. When flying against the tailwind, it flew at a speed of 330 mph. Graph the system to find the speed of the plane in calm air and the speed of the tailwind.
A. Speed of plane: 405 mph Speed of tailwind: 55 mph B. Speed of plane: 55 mph Speed of tailwind: 405 mph C. Speed of plane: 395 mph Speed of tailwind: 65 mph D. Speed of plane: 65 mph Speed of tailwind: 395 mph
Find the mean, median, and mode for each set of numbers.12.507, 12.556, 12.701, 12.617, 12.844
A. Mean = 12.635, Median = 12.618, Mode = None B. Mean = 12.642, Median = 12.615, Mode = 12.507 C. Mean = 12.655, Median = 12.612, Mode = 12.507 D. Mean = 12.645, Median = 12.617, Mode = None