Find the points of inflection.f(x) = x3 + 7x + 2
A. (0, 7)
B. (0, 2)
C. (2, 7)
D. (2, 0)
Answer: B
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Add or subtract vertically.Subtract x4 - 4x3 + x2 - 9x from 4x4 + 9x3 + 5.
A. 3x4 + 13x3 + x2 - 4x B. 3x4 + 5x3 - x2 - 9x + 5 C. 3x4 + 13x3 - x2 + 9x + 5 D. 3x4 + 13x3 + x2 - 9x + 5
Find an equation of variation if the following conditions exist.Suppose m varies directly as p and m = 63 when p = 7.
A. m = 
p
B. m = 56p
C. m = 70p
D. m = 9p
Solve.x2 - 4x + 20 = 0
A. 4 ± 8i B. -2 ± 4i C. 2 ± 4i D. -2, 6
Solve the problem, rounding the answer as appropriate. Assume that "pure dominant" describes one who has two dominant genes for a given trait; "pure recessive" describes one who has two recessive genes for a given trait; and "hybrid" describes one who has one of each.In a population, 40% of the females are pure dominant, 50% are hybrid, and 10% are pure recessive. If a pure recessive male mates with a random female and their first offspring has the dominant trait, what is the probability that the female is hybrid?
A. .17 B. .25 C. .56 D. .50