Graph the curve whose parametric equations are given.x = -sec t, y = tan t; - 
< t < 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the largest open interval where the function is changing as requested.Decreasing y = 
+ 7
A. (0, ?) B. (-7, 0) C. (7, ?) D. (-7, 7)
Mathematics
Evaluate the algebraic expression for the given values of the variables.6x2 + 3y for x = 9 and y = 4
A. 2928 B. 2016 C. 498 D. 123
Mathematics
Perform the indicated operation and, if possible, simplify.
- 
A. 
B. 
C. 
D. 
Mathematics
Write two equivalent expressions for the opposite of the polynomial.4x5y3 - 9x5y + 10x4y - 4x3
A. (-4x5y3 - 9x5y + 10x4y - 4x3), -4x5y3 + 9x5y - 10x4y + 4x3 B. -(-4x5y3 + 9x5y - 10x4y + 4x3), -4x5y3 - 9x5y + 10x4y - 4x3 C. -(4x5y3 - 9x5y + 10x4y - 4x3), -4x5y3 + 9x5y - 10x4y + 4x3 D. None of these
Mathematics