To determine how much more Xavier needs to earn, we can set up an inequality.
Let \( x \) represent the amount of money he still needs to earn. We know that Xavier's goal is to earn a total of $300, and he has already earned $56 by mowing lawns.
The inequality can be expressed as:
\[ x + 56 < 300 \]
Now, we will solve for \( x \):
- Subtract 56 from both sides of the inequality:
\[ x < 300 - 56 \]
- Calculate the right side:
\[ 300 - 56 = 244 \]
So, the inequality simplifies to:
\[ x < 244 \]
This means Xavier needs to earn less than $244 more to reach his goal of $300.
Thus, to summarize, Xavier needs to earn $244 or less more to achieve his goal of $300 for the trip.