Solve the problem.Let P(x, y) be a point on the graph of y = x2 - 2. Express the distance, d, from P to the origin as a function of the point's x-coordinate.
A. d(x) = 
B. d(x) = 
C. d(x) = 
D. d(x) = 
Answer: A
Mathematics
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Simplify the following expression.
?
?
A. ?4y2 B. 9y2 C. 96y2 D. 6y2 E. 24y2
Mathematics
Find the expected value.The following table gives the distribution of heights for female students at one U.S. college. 
Find the expected value of height for women at this college. Use the midpoint of each category, (for example use 58 for the 57-59 category). Use 74 for the 72 and over category.
A. 64.6 in. B. 64.2 in. C. 63.8 in. D. 65.0 in.
Mathematics
Use the substitution formula to evaluate the integral.
sec2 2x dx
A. 2e
B. - 
C. 
D. e
Mathematics
Graph the equation by finding the slope and y-intercept.4x + y = 7
A. 
B. 
C. 
D. 
Mathematics