Question

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Answer 1

Answer: The 1st option is the answer.

Explanation:

So let your explicit rule be f(x) = 14 - 9x.

The gradient of this graph is the coefficient of x, which is -9. So each time x is increased by 1, f(x) increases by -9, which is to say it decreases by 9.

So a(n) = a(n-1) -9.

And a(1) = 14 - 9 × 1, which is 5. We get this by substituting i for n.

So your answer is the 1st option.

Hope i helped ya...