To find the number of hours \( h \) that Tyrell still needs to volunteer to reach his goal of 26 hours, we can set up an equation based on his current hours volunteered.
- Goal hours: 26 hours
- Hours volunteered so far: 17 hours
- Hours still needed: \( h \)
We can represent this relationship with the following equation:
\[ 17 + h = 26 \]
To solve for \( h \), we need to isolate \( h \) on one side of the equation:
\[ h = 26 - 17 \]
Calculating the right side:
\[ h = 9 \]
So, Tyrell still needs to volunteer 9 hours to reach his goal for this month.