Mathematics

Carl Webb

2 September, 13:15

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? She used the incorrect common ratio. She used the incorrect initial value. She should have multiplied by f (x) rather then have it as an exponent. She treated the sequence as geometric instead of arithmetic.