Use sets to solve the problem.A survey of 240 families showed that91 had a dog;70 had a cat;31 had a dog and a cat;91 had neither a cat nor a dog nor a parakeet;7 had a cat and dog and a parakeet.How many had a parakeet only?
A. 24
B. 29
C. 19
D. 34
Answer: C
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Evaluate the integral by changing the order of integration in an appropriate way.
A. 
ln 513
B. 9 ln 513
C. 
ln 4097
D. 9 ln 4097
Write the best-fit linear model for the data.A pediatric speech therapist started her own practice in 2000. The table below shows the number of children she treated each year from 2004 to 2012. Align the data to the number of years past 2004 and fit a linear model to the data.
A. y = 11x + 2 B. y = 10.53x + 3.2 C. y = 2x + 11 D. y = 3.2 x + 10.53
Solve the problem.Mike, Joe, and Bill are painting a fence. The painting can be finished if Mike and Joe work together for 4 hours and Bill works alone for 2 hours or if Mike and Joe work together for 2 hours and Bill works alone for 5 hours, or if Mike works alone for 6 hours, Joe works alone for 2 hours, and Bill works alone for 1 hour. How much time does it take for each man working alone to complete the painting?
A. Mike 8 hr, Joe 16 hr, Bill 8 hr B. Mike 12 hr, Joe 10 hr, Bill 10 hr C. Mike 8 hr, Joe 8 hr, Bill 16 hr D. Mike 16 hr, Joe 8 hr, Bill 8 hr
Write the slope-intercept form of the equation for the line passing through the given pair of points.(9, -6) and (0, -4)
A. y = - 
x - 4
B. y = 
x - 4
C. y = - 
x - 4
D. y = 
x - 4