Solve.How long will it take for the population of a certain country to triple if its annual growth rate is 2%? Round to the nearest year.

A. 2 yr
B. 151 yr
C. 55 yr
D. 24 yr

Answer: C

Mathematics

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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges. +  +  + ... +  + ...

A. ; 8
B. ; 4
C. ; 4
D. ; 8

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Mathematics

Find the exact value of the expression.cos-1

A.
B.
C.
D.

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Mathematics

Divide and simplify.

A. 15x7 + 
B. -3 - 10x5
C. -3 + 
D. -3 + 2x2

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Mathematics

Solve the problem.For the function f(x) = 2x + , solve f(x) = 7.

A. x = 
B. x = -3 or x = 2
C. x =  or x = 3
D. x = 7 or x = 2

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Mathematics