To rewrite \( 22 + 55 \) using their greatest common factor (GCF) and multiplication, we first find the GCF of 22 and 55.
The prime factorization of 22 is \( 2 \times 11 \) and the prime factorization of 55 is \( 5 \times 11 \).
The GCF is \( 11 \).
Now we can factor \( 22 + 55 \) as follows:
\[ 22 + 55 = 11(2 + 5) \]
Therefore, the correct response is:
11(2+5)