Answer the question.Which one of the equations below matches the graph?
A. y = -2 sin
B. y = 2 sin
C. y = 2 cos(3x)
D. y = 2 cos
Answer: B
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The following question(s) refer(s) to the capture-recapture method: n1 denotes the size of the tagged (captured) sample, n2 denotes the size of the second (recaptured) sample, and k denotes the number of tagged individuals in the second sample.If n1 = 500, n2 = 300, and k = 25, an estimate for the size of the population is
A. 1500. B. 15. C. 4500. D. 6000. E. none of these
Solve the absolute value equation.
= 
A. x = - 
B. x = - 1, 
C. no solution
D. x = - 
, - 
Solve the problem.The perimeter of a rectangle is six times the width. If the length were increased by 4 inches and the width were increased by 7 inches, then the perimeter would be 160 inches. What is the width?
A. 46 in. B. 69 in. C. 23 in. D. 138 in.
Factor completely. If a polynomial cannot be factored, say it is prime.-16x3 + 44x2 - 10x
A. x(2x - 5)(-8x + 2) B. -2(2x2 - 5)(4x - 1) C. -2x(2x - 5)(4x - 1) D. x(-4x + 10)(4x - 1)