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, 50% of females are pure dominant, 40% 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 pure dominant?
A. .34
B. .56
C. .75
D. .50
Answer: B
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The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the figure to answer the question. s (m)
When is the body moving forward?
A. 0 < t < 1, 3 < t < 4, 5 < t < 7 B. 0 < t < 3, 3 < t < 5, 5 < t < 8 C. 0 < t < 8 D. 0 < t < 1, 3 < t < 4, 5 < t < 7, 9 < t < 10
Determine how many decimal places the product will have. Do not multiply.7.6 × 0.91
A. four B. one C. two D. three
Find the first five terms of the infinite sequence whose nth term is given.an = (-1)n - 1 (
)
A. - 3, 
, 1, - 
, 
B. 3, - 
, 1, - 
, 
C. 3, 
, 1, 
, 
D. - 3, 
, - 1, 
, - 
Find a formula for the expression. Use sigma notation.
A. xny-1 + 
xn-kyk-1
B. + xny-1 + 
xn-kyk-1
C. xny-1 + 
xn-kyk
D. xny-1 + 
xn-kyk-1