Find the union of the two sets.{3, 5, 6, 8} ? ?
A. ?
B. {3, 5, 6, 8}
C. {6, 8}
D. {3, 5}
Answer: B
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Factor out the greatest common factor. Simplify the factors, if possible.64m8 + 40m5 - 16m2
A. m2(64m6 + 40m3 - 16) B. 8m2(8m6 + 5m3 - 2) C. -m2(-64m6 + 40m3 + 16) D. 8(8m8 + 5m5 - 2m2)
Find the values of x for which the given function is concave up, the values of x for which the function is concave down, and any points of inflection.y = x2 - 2x + 7
A. Concave down for x < 1, concave up for x > 1, point of inflection at (1, 6) B. Concave up for all x, no points of inflection C. Concave down for all x, no points of inflection D. Concave up for x < 1, concave down for x > 1, point of inflection at (1, 6)
Estimate the fraction as 0, 
, or 1.
A. 0
B. 1
C. 
Evaluate or simplify the exponential expression.120
A. 1 B. -1 C. 0 D. 12