To write a working equation that represents the number of hours \( h \) that Tyrell still needs to volunteer to reach his goal of 26 hours, we can set up the equation as follows:
\[ h + 17 = 26 \]
Now, we can solve for \( h \):
- Subtract 17 from both sides of the equation:
\[ h = 26 - 17 \]
- Calculate the right side:
\[ h = 9 \]
So, the complete answers are:
- The equation: \( h + 17 = 26 \)
- The solution: \( h = 9 \)
Tyrell still needs to volunteer 9 hours to reach his goal of 26 hours for the month.