Question

The sequences below are either arithmetic sequences or geometric sequences. For each sequence, determine whether it is arithmeticthor geometric, and write the formula for the nSequence(a) 7, 28, 112, ...(b) 17, 21, 25, ...TypeArithmeticGeometricArithmeticGeometricthnterm anof that sequence.term formula9,= 00⁰0+0X8 08ローロ0.03

Answer 1

a) Geometric sequence

`a_n=7\ast4^(n-1)`

b) Arithmetic sequence:

`a_(n_)=17+(4\ast(n-1))`

Analysis

In