Solve the problem.A wheel is rotating at 6 radians/sec, and the wheel has a 34-inch diameter. To the nearest foot per minute, what is the velocity of a point on the rim?
A. 505 ft/min
B. 510 ft/min
C. 515 ft/min
D. 500 ft/min
Answer: B
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The weight w of a certain animal satisfies an equation of change. At a specific weight, the equation of change indicates that 
is positive. What can you conclude about how the animal's weight can be expected to change?
?
A. The weight will stay the same. B. The animal will gain weight. C. The animal will lose weight. D. The weight is at a minimum value.
Sketch a typical level surface for the function.f(x, y, z) = cos (x2 + y2 + z2)
A. 
B. 
C. 
D. 
Solve the problem.Standing 16 feet from a streetlight, a 7-foot-tall tree casts a 4-foot shadow. How tall is the streetlight?
A. 35 ft B. 42 ft C. 28 ft D. 21 ft
Solve the problem.You have 84 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area.
A. length: 21 ft, width: 21 ft B. length: 63 ft, width: 21 ft C. length: 42 ft, width: 21 ft D. length: 42 ft, width: 42 ft