He equation yˆ=67.34x−128,933.4 predicts a rodent population in a town in year x. According to the equation, what was the rodent population in 2005? Enter your answer in the box. Round to the whole number.

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answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

ghjmutmum

step-by-step explanation: