Question

Find a formula for a geometric sequence that begins with 7, 35, 175,...​

Answer 1

a = 7

r = 35/7 = 5

a × r^(n-1)

7 × 5^(n-1)

Answer 2

○ b.
`\displaystyle b_n = 7(5)^(n - 1)`

Explanation:

The original term is "7", the common ratio is "5", and finally, you set the exponent to the power of "n - 1".

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