Homework Help: math

Posted by Anonymous on Saturday, September 25, 2010 at 3:25am.

A certain kind of animal weighs about 73 pounds at birth and gains about 2 pounds per day for the first few weeks. Determine those days for which the animal's weighs more than 121 pounds.
The animal's weight is more than 121 pounds when the animal is more than__ days old.

math - Reiny, Saturday, September 25, 2010 at 8:06am
You have an arithmetic sequence with
a = 73 , and d = 2

term(n) = a + (n-1)d
so solve
73 + 3(n-1) >121
math - Anonymous, Sunday, December 5, 2010 at 8:39pm
24

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