Choosing a 6 one though six then a prime number

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

What is the the greatest common factor ?

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.