ANSWER
12,600 people
EXPLANATION
We have that 70% of customers are more likely to visit restaurants that offer locally produced food.
The population of the town is 18,000.
To find the number of people that might prefer a restaurant with locally produced food, we have to find 70% of 18,000.
That is:
[tex]\frac{70}{100}\cdot\text{ 18000 = 12,600 people}[/tex]12,600 people might prefer a restaurant with locally produced food.