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anonymous
 one year ago
Shanna writes the formula f(x + 1) = 2.5f(x) when f(1) = 2 to represent this sequence: 2, 5, 12.5, 31.25, …
Which error did Shanna make?
anonymous
 one year ago
Shanna writes the formula f(x + 1) = 2.5f(x) when f(1) = 2 to represent this sequence: 2, 5, 12.5, 31.25, … Which error did Shanna make?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A) She used the incorrect common ratio. B) She used the incorrect initial value. C) She should have multiplied by f(x) rather then have it as an exponent. D) She treated the sequence as geometric instead of arithmetic.

Owlcoffee
 one year ago
Best ResponseYou've already chosen the best response.0Well, you'll have to determine the common ratio the same way, divide the second by the first, and if it does not give 2,5 as a result, she used the wrong common ratio.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what do you think @shaylaLuv ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think shanna did nothing wrong

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(f(x + 1) = 2.5f(x)\), \(f(1) = 2\), let \(x=1\)\[f(2)=2.5f(1)=2.5 \times 2=5\]and let \(x=2\)\[f(3)=2.5f(2)=2.5 \times5=12.5\]let \(x=3\)\[f(4)=2.5f(3)=2.5 \times 12.5=31.25\]
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