Answer:
7 feet
Explanation:
To find out how many feet of fabric Jimmy has left for his third project, we need to subtract the total feet of fabric used for his first and second projects from the fabric he started with.
Fabric used for first project: 12 feet
Fabric used for second project: 17 feet
Total fabric used: 12 feet + 17 feet = 29 feet
Fabric remaining: 36 feet - 29 feet = 7 feet
Jimmy has 7 feet of fabric left for his third project.