Answer:
3
Step by Step:
Subtract the tip ($6) from the total ($39)
11x=33
Then divide 33 by 11, leaving you with the value of x.
x=3
The lesson was 3 hours long.
Use
y-y1=m(x-x1)
y-(-2)=4(x-1) Now why 4??Because parallel lines have the exact same slope
y+2=4x-4
y=4x-4-2
y=4x-6
Hope it helps!

~Just a teen who listens to music
Answer:
1/2 or 0.50
Step-by-step explanation:
To find the probability of getting either blue or green on a spinner, we must add both probabilities together.

To make adding our two fractions easier, we need to make sure they have like denominators.

Now that the denominators of our probabilities are the same, we can add them together to get our answer.

or 
Answer:
The answer is B. Between 4.5 and 6 hours since he started playing
Step-by-step explanation: