<span>The best answer is:
If it is a rectangle, then it does not have three sides.
</span>This statement is also known as the equivalent contra-positive.
First term: -9
Common difference: 7
a(n) = -9 + 7(n-1), for n = {1, 2, 3, ... }
Check: what is the first term? let n=1. Then a(1) = -9 + 7(1-1) = -9.
This is correct.
12 because six people came to the party and you shake their hand
The answer is A your answer
