Find explicit formula for the sequence given by the recursive definition u_n= 5u_(n-1), u_1= 20
1 answer:
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Answer:
see explanation
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = 5x + 4 ( subtract 4 from both sides )
y - 4 = 5x ( divide both sides by 5 )
= x
Change y back into terms of x
(x) =