Sketch the graph of the function.f(x) = 
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.The life (in months) of an automobile battery has a probability density function defined by 
for x in 
Find the probability that the life of a randomly selected battery is greater than 5 years.
A. 0.1889 B. 0.2704 C. 0.0630 D. 0.8111
Solve the problem.An office contains 1000 ft3 of air initially free of carbon monoxide. Starting at time = 0, cigarette smoke containing 4% carbon monoxide is blown into the room at the rate of 0.5 ft3/min. A ceiling fan keeps the air in the room well circulated and the air leaves the room at the same rate of 0.5ft3/min. Find the time when the concentration of carbon monoxide reaches 0.01%.
A. 7.01 min B. 5.01 min C. 6.01 min D. 8.01 min
Write the fractions as decimal numbers.
A. 0.0024 B. 0.24 C. 0.024 D. 0.00024
Simplify. Write your answers in the form of a+bi, where a and b are real numbers.(3 - 3i)(3 - 8i)
A. -15 + 33i B. -15 - 33i C. 33 + 15i D. 24i2 - 33i + 9