Solve the problem.The number of birds born each year at the local zoo forms a sequence whose general term is  Find the number of birds born in the fourth year, and find the total number of birds born in the first four years.

A. 28 birds; 41 birds
B. 28 birds; 53 birds
C. 45 birds; 86 birds
D. 45 birds; 98 birds


Answer: C

Mathematics

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