Answer:
first term = 7
common difference = 2
fifth term = 15
Step-by-step explanation:
A1 is the first term.
A1 = 7
First term = 7
nth term:
An = An-1 + 2
The nth term is the n-1 term plus 2. That means each term is 2 more than the previous term.
common difference = 2
first term = A1 = 7
second term = An-1 + 2 = 7 + 2 = 9
third term = An-1 + 2 = 9 + 2 = 11
fourth term = An-1 + 2 = 11 + 2 = 13
fifth term = An1 + 2 = 13 + 2 = 15
