List the elements of the set.If A = {x|x is an odd integer} and B = {x|x is an even integer}, list the elements of A ? B.
A. {x|x is an even integer}
B. {x|x is an integer}
C. { }
D. {0}
Answer: C
Mathematics
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Solve and check the equation.0.40x - 0.20(40 + x) = 0.05(40)
A. {40} B. {60} C. {25} D. {50}
Mathematics
Find the product using the FOIL method.(x2 + 4)(x2 + 5)
A. x4 - 9x2 - 20 B. x4 + 20x2 + 20 C. x4 + 9x2 + 20 D. x4 + 9x2 + 40
Mathematics
Find the unknown number in the proportion. Write your answer as a whole number or a mixed number if possible.
= 
A. x = 
B. x = 20
C. x = 1
D. x = 1
Mathematics
Solve.In recent years, many states have passed laws against smoking in public buildings. The total number of states N that have passed a no smoking in public buildings law, t years after 1987 is given by the functionN(t) = 
How many states had passed the law in 1987?
A. 1.087 B. 0 C. 2.174 D. 0.217
Mathematics