Simplify the expression by combining like terms. 19.5y + 6.2 - 8.8y - 11.6
A. 11.7x - 5.4
B. 5.3x
C. 10.7x - 5.4
D. 10.7x + 5.4
Answer: C
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Solve the problem by integration.Find the first-quadrant area bounded by 
and 
A. 
ln 
B. 12 ln 
C. 
ln 
D. 
ln 
Find the differential of the function.y = 6 tan3x
A. 18 tan2x dx B. 18 tan3x sec x dx C. 18 tan2x sec 2x dx D. 18 tan4x dx
Use the information in the table to solve the problem. Write your answer as a fraction in lowest terms.The table below shows the amounts of pollutants (in parts per million) in a sample of rainwater.
Find the ratio of pollutant A to pollutant B.
A. 
B. 
C. 
D. 
Model the problem with a linear equation.The average value of a certain type of automobile was $13,500 in 2008 and depreciated to $6660 in 2011. Let y be the average value of the automobile in the year x, where x = 0 represents 2008. Write a linear equation that models the value of the automobile in terms of the year x.
A. y = -2280x + 13,500
B. y = -2280x - 180
C. y = -2280x + 6660
D. y = - 
x - 6660