Find the product.[(3x - y) + 4z][(3x - y) - 4z]

A. 9x2 + y2 + 24xz + 8yz - 16z2
B. 9x2 + y2 - 16z2
C. 9x2 - 6xy + y2 - 16z2
D. 9x2 - 6xy + y2 + 24xz + 8yz - 16z2


Answer: C

Mathematics

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Solve.The population growth of an animal species is described by  where t is the number of months since the species was introduced. Find the population of this species in an area 1 month(s) after the species is introduced.

A. 1140 B. 500 C. 980 D. 590

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Find the interval(s) for b such that the equation has at least one real solution and write a conjecture about the interval(s) based on the values of the coefficients ? . ?

A.

If  and or 


B.

If  and or 


C.

If  and or 


D.

If  and or 


E.

If  and or 


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Solve the problem.Find the area A and circumference C of a circle of diameter 18 in.. Use 3.14 for ?. Round the result to the nearest tenth.

A. A = 1017.4 in.2; C = 28.3 in. B. A = 113 in.2; C = 28.3 in. C. A = 254.3 in.2; C = 56.5 in. D. A = 56.5 in.2; C = 56.5 in.

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Solve the problem.The table lists the monthly precipitation P in Salem, Missouri, where x = 1 corresponds to January and  corresponds to September.Determine the value of P during September.

A. 1.4 inches B. 2.4 inches C. 1.7 inches D. 1.2 inches

Mathematics