At what points is the given function continuous?f(x, y) = 
A. All (x, y) satisfying x - y ? 0
B. All (x, y) such that x ? 
and x ? -2
C. All (x, y) such that x ? 0
D. All (x, y)
Answer: B
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Make a truth table for the given statement. The letters p, q, r, s represent propositions.q and (not r) and s
A. 
B. 
C. 
D. 
Solve the problem.The image of a figure under the translation that takes P to P' is shown. Find the original figure. Note again, the given figure is the image after translation.
A. 
B. 
C. 
D. 
Solve the problem.The perimeter of a triangle is 60 cm. The triangle is isosceles now, but if its base were lengthened by 5 cm and each leg were shortened by 7 cm, it would be equilateral. Find the length of the base of the original triangle.
A. 11 cm B. 12 cm C. 17 cm D. 24 cm
Use the line graph to answer the question.The line graph shows the 2001 sales data for the Big "D" company. 
Find the decrease in sales between month 3 to month 5.
A. $2000 B. $400 C. $1000 D. $4000