Question

1. 9t + 9

Explanation:

Step1: Identify common factor

The terms \(9t\) and \(9\) have a common factor of \(9\).

Step2: Factor out the common factor

Using the distributive property \(ab + ac = a(b + c)\), where \(a = 9\), \(b = t\), and \(c = 1\), we get \(9(t + 1)\).

Answer:

\(9(t + 1)\)