Answer:
Craig practiced for 104 hours.
Explanation:
To find out how many hours Craig practiced, you can multiply the number of hours Nicki practiced by 8, as you mentioned that Craig practiced 8 times as many hours as Nicki.
Craig's practice hours = Nicki's practice hours × 8
Craig's practice hours = 13 hours × 8
Craig's practice hours = 104 hours
So, Craig practiced for about 104 hours.