The angle of depression from the top of a flag pole to a point on the ground is 30°. if the point on the ground is 75 feet from the base of the flag pole, how tall is the pole to the nearest foot?
a) 38 feet
b) 43 feet
c) 53 feet
d) 106 feet

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

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Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?