A sequence is defined by the formula f(n + 1) = f(n) - 3. If f(4) = 22, what is f(1)?

A sequence is defined by the formula f(n + 1) = f(n) - 3. If f(4) = 22

1.	A sequence is defined by the formula f(n + 1) = f(n) - 3. If f(4) = 22, what is f(1)?
Answer» <strong style="font-size: 15px; line-height: 20px !important;">A sequence is defined by the formula f(n + 1) = f(n) - 3. If f(4) = 22, what is f(1)?</strong><p><strong>Solution:</strong></p>