Question

this model represents the expression $1 + 1 + q + q$.

which expression is equivalent to $1 + 1 + q + q$?

$2 + 2q$ $1 + 3q$ $4 + q$ $2 + q$

Explanation:

Step1: Combine constant terms

Add the constant terms \(1 + 1\).
\(1 + 1 = 2\)

Step2: Combine variable terms

Add the variable terms \(q + q\).
\(q + q = 2q\)

Step3: Form the equivalent expression

Combine the results from Step1 and Step2.
\(2 + 2q\)

Answer:

\(2 + 2q\) (the first option among the given choices)