CPM Homework Help : CCA2 Problem A-78

Write both an explicit equation and a recursive equation for the sequence: $5,8,11,14,17,\dots$

Hint:

Are the terms in the sequence being added to or multiplied by? In other words, is the sequence arithmetic or geometric?

More Help:

3 is being added to each item. What is $t(0)$ ? Write the explicit equation.
$t(1)=5$ . What is $t(n+1)$ ?

Answer:

Explicit: $t(n)=3n+2$
Recursive: $t(1)=5;t(n+1)=t(n)+3$