If the population of a certain town today is  N, then in one year the population  will be . The initial population is  3,132. Find a formula that gives the population N after t years.
?

A.
B. ?
C.
D. ?

Answer: C

Mathematics

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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(5x - 7)

A. y = 5u - 7; u = cot x;  = - 5 cot x csc2 x
B. y = cot u; u = 5x - 7;  = - 5 cot(5x - 7) csc(5x - 7)
C. y = cot u; u = 5x - 7;  = - 5 csc2(5x - 7)
D. y = cot u; u = 5x - 7;  = - csc2(5x - 7)

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Solve.The height in meters of females in a certain ethnic group is approximated by h = 0.52 + 2 log (t/3) where t is the girl's age in years and 1 ? t ? 20. Estimate a girl's height at 4 years of age in this particular ethnic group. Round to the nearest hundredth.

A. 0.52 m B. 0.77 m C. 1.12 m D. 0.96 m

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Solve the problem. Use ? ? 3.14 when necessary.Find the volume of a rectangular pyramid with base 15 m2 and height 9 m. Find the result to the nearest unit.

A. 68 m3 B. 45 m3 C. 135 m3 D. 43 m3

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Solve the inequality. Write the answer in set-builder notation. + 8 ? 10

A. {xx < 6}
B. {xx ? 4}
C. {xx ? 0}
D. {xx ? 4}

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Mathematics