Find the integral.
A. 
x3 - 15x2 + 9x + C
B. 
x3 - 15x2 + 9x + C
C. 
x2 + 9x + C
D. 
x3 + 9x + C
Answer: B
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Solve the problem.Let f(x,y) = ln (x2 + y2). Which one of the following curves is a simple closed path in the domain of the function f?
A. The unit circle (x - 5)2 + y2 = 1
B. The ellipse 
+ 
= 1
C. The rectangle with vertices at (-3, 2), (3, 2), (3, -2), and (-3, -2)
D. The unit circle x2 + y2 = 1
Which of the following statements about correlation is true?
a. -we say there is a positive correlation between x and y if there is no distinct pattern in the scatterplot b. -we say that there is a positive correlation between x and y if the x-values increase as the corresponding y-values increase c. -we say that there is a positive correlation between x and y if the x-vales increase as the corresponding y-values decrease d. -we say that there is a negative correlation between x and y if the x-values increase as the corresponding y-values increase
Using the Pythagorean Theorem, find the hypotenuse if a = 3 and b = 4.
a. 1
b. 14
c. 12
d. 5
e. 7
Write the fraction in lowest terms.
A. 
B. 
C. 
D. 