Solve the system of equations by elimination.
A. x = 1, y = 0; (1, 0)
B. x = 0, y = 1; (0, 1)
C. x = 1, y = 1; (1, 1)
D. x = 0, y = 0; (0, 0)
Answer: B
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local maximum at x = 3; local minimum at x = -3 ; concave up on (0, -3) and (3, ?); concave down on (-3, 3) B. Local minimum at x = 3; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 3; local maximum at x = -3 ; concave up on (0, -3) and (3, ?); concave down on (-3, 3) D. Local minimum at x = 3; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0)
Use the given encoding matrix A to solve the problem.The following message was encoded with matrix
. Decode this message.28 64 32 91 30 65 24 60 38 99 42 99 35 82 36 81 46 119 13 31 23 51
What will be an ideal response?
Simplify.
? 
A. -26 B. -25 C. -13 D. 28
Evaluate the following expression. (x ? ?/2+?n, where n is a whole number) ? tan7x sec2x - tan7x ?
A. 9 tan9x B. tan2x C. tan9x D. 7 tan7x E. tan7x