The proprietor of Cunningham's Hardware Store has decided to install floodlights on the premises as a measure against vandalism and theft.
If the probability is 0.01 that a certain brand of floodlight will burn out within a year, find the minimum number of floodlights that must be installed to ensure that the probability that at least one of them will remain functional within the year is at least 0.9999. (Assume that the floodlights operate independently.)
The probability is __________.
Answer: 3
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Find the limit of the sequence if it converges; otherwise indicate divergence.an = (-1)n 
A. 9 B. ±9 C. 0 D. Diverges
Find the number of subsets of the set.{math, English, history, science, art}
A. 24 B. 32 C. 16 D. 28
The displacement d (in meters) of an object at time t (in seconds) is given. Describe the motion of the object. What is the maximum displacement from its resting position, the time required for one oscillation, and the frequency?d = 4 cos (3t)
A. simple harmonic; 4 m; 
sec; 
? oscillations/sec
B. simple harmonic; -4 m; 
? sec; 
oscillations/sec
C. simple harmonic; 4 m; 3 ? sec; 
oscillations/sec
D. simple harmonic; 4 m; 
? sec; 
oscillations/sec
Solve.A vendor has learned that, by pricing hot dogs at $1.50, sales will reach 134 hot dogs per day. Raising the price to $2.50 will cause the sales to fall to 94 hot dogs per day. Let y be the number of hot dogs the vendor sells at x dollars each. Write a linear equation that relates the number of hot dogs sold per day, y, to the price x.
A. y = 40x + 74
B. y = -40x + 194
C. y = -40x - 194
D. y = - 
x + 