It's 8n meaning 8 times n (8*n) so for example for 5 nights she would sleep : 8*5 = 40 hours in total.
The GCF is the greatest common factor.
Find the factors for 45, 90, and 75;
45: 1, 3, 5, 9, 15, 45
90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
75: 1, 3, 5, 15, 25, <span>75
Now find the biggest factor they have in all, which is 15.
Hope this helps. </span>
Answer:
If you simplify the equation, you will get, 
Step-by-step explanation:
You have to combine like terms.
and
are like terms, so you add them together.
Answer:
0.5 or 1/2
Step-by-step explanation: