Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 1
B. ?
C. 0
D. -1
Answer: C
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Evaluate the integral by using a substitution prior to integration by parts.
A. xln (6x + 6x2) + C B. xln (6x + 6x2) + ln (x +1) - 2x + C C. ln (6x + 6x2) + ln (x +1) + C D. ln (6x + 6x2) - 2x + C
A scatterplot with the line of best fit that has a downward (from left to right) slop would be considered a _________ correlation
Fill in the blank(s) with the appropriate word(s).
Solve the double inequality.13 < 
< 15
A. - 
< x < 
B. 
< x < 
C. - 
< x < 
D. - 
? x ? 
Provide an appropriate response.It can be shown that an ellipse with foci (c, 0) and (-c, 0), where the sum of the distances from any point (x, y) of the ellipse to the two foci is 2a, has the equation 
+ 
= 1. Use this result to find an equation of an ellipse with foci (2, 0) and (-2, 0), where the sum of the distances from any point of the ellipse to the two foci is 12.
A. x2 + y2 = 144
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1