Solve.The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 479 vibrations per second and a wavelength of 8.8 ft. Find the wavelength of another tone that has a pitch of 492 vibrations per second.
A. 26,780.5 ft
B. 0.000037 ft
C. 0.12 ft
D. 8.6 ft
Answer: D
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Provide an appropriate response.Estimate answer by rounding numbers to the nearest ten. Then find the exact answer. A welder uses 88 welding rods for his first job and 19 welding rods for a second job. How many more rods did he use for the first job?
A. 60 rods; 79 rods B. 70 rods; 71 rods C. 60 rods; 69 rods D. 70 rods; 69 rods
Solve the given inequality (a related function is graphed).-x2 + 3x ? -7x + 21 
x-intercepts: (3, 0), (7, 0)
A. (3, 7) ? (7, ?) B. (-?, 3] ? [7, ?) C. [3, 7] D. (-?, -3) ? (7, ?)
Find the volume of a regular pyramid with height 7.8 inches and square base with side 9.2 inches.
What will be an ideal response?
Use Euler's method to approximate the indicated function value to three decimal places using 
- y = 3ex; y(0) = 80; find y(0.4)
A. 119.140 B. 119.718 C. 118.736 D. 120.018