Question

ann sleeps 8 hours a night. write an expression for the number of hours Ann sleeps in n nights

Answer 1

The answer is 8n. If she sleeps 8 hours a night, and n is the number of nights, then you multiply the number of nights by 8 hours to find how many hours she sleeps in that number of nights. 

Answer 2

It's 8n meaning 8 times n (8*n) so for example for 5 nights she would sleep : 8*5 = 40 hours in total.