Determine whether A = B, A ? B, B ? A, A ? B, B ? A, or if none of these applies.A = {x | x ? N and x > 9}B = {x | x ? N and 2 < x ? 9}
A. A ? B
B. None of these
C. B ? A
D. A ? B and A ? B
Answer: B
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Find the rectangular equation of the given polar equation.r = 5
A. x2 - y2 = 25 B. x + y = 25 C. x2 + y2 = 25 D. x + y = 5
Sketch the graph of the polynomial function. Use the rational zeros theorem when finding the zeros.f(x) = 4x4 + 8x3 - 33x2 - 2x + 8
A. 
B. 
C. 
D. 
Find the area of the triangle or rectangle. Round to the nearest thousandth, if necessary.
A. 1190 sq. yd B. 595 sq. yd C. 476 sq. yd D. 392 sq. yd
Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation 
, where x is the time in months, with 
corresponding to January, 
, and 
Determine the month with the least sales and give the sales in that month.
A. June; $3800 B. March; $12,200 C. September; $4600 D. December; $8400