Solve the problem.The city council of a small town needs to determine if the town's residents will support the building of a new library. The council decides to conduct a survey of a sample of the town's residents. Which one of the following procedures would be most appropriate for obtaining a sample of the town's residents?
A. Survey every 9th person who enters the old library on a given day.
B. Survey a random sample of persons within each neighborhood of the town.
C. Survey a random sample of librarians who live in the town.
D. Survey 300 individuals who are randomly selected from a list of all people living in the state in which the town is located.
Answer: B
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Use a definite integral to find an expression that represents the area of the region between the given curve and the x-axis on the interval [0, b].y = 8x
A. -8b B. 4b2 C. 8b D. -4b2
Solve the problem.Use Newton's method to estimate the solutions of the equation 
. Start with 
for the right-hand solution and with 
for the solution on the left. Then, in each case find x2.
What will be an ideal response?
Perform all operations in correct order.72 - 2 × 4
A. 188 B. 100 C. 140 D. 41
Solve the problem.On a Touch Tone phone, each button produces a unique sound. The sound produced is the sum of two tones and is given by 
and y = sin (2?ht), where l and h are the low and high frequencies (in hertz = Hz) associated with that button. 
The tone produced is thus given by y = sin (2?lt) + sin (2?ht). Write an expression that models the tone by pressing the "5" button as a product of sines and cosines.
A. y = 2 sin (2247?t) cos (707?t) B. y = 2 sin (707?t) cos (2247?t) C. y = 2 sin (566?t) cos (2106?t) D. y = 2 sin (2106?t) cos (566?t)