f(n)=15+2(n-1)

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Solution for f(n)=15+2(n-1) equation: 


Simplifying
f(n) = 15 + 2(n + -1)

Multiply f * n
fn = 15 + 2(n + -1)

Reorder the terms:
fn = 15 + 2(-1 + n)
fn = 15 + (-1 * 2 + n * 2)
fn = 15 + (-2 + 2n)

Combine like terms: 15 + -2 = 13
fn = 13 + 2n

Solving
fn = 13 + 2n

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'n'.
f = 13n-1 + 2

Simplifying
f = 13n-1 + 2

Reorder the terms:
f = 2 + 13n-1

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