To find the reciprocal, flip the fraction!
Yes.
He rounded it.
The exact answer is 1.82149362477
This is linear. 8x-5y=15
-5y=15-8x
Divide -5
Y=8/5x-3.
Start at -3 on y axis and go down 8 points and right 3.
Answer:

Step-by-step explanation:

The 1st one is 8 because a coin has 2 sides and you have 4 colors whats 2*4=?