Answer:
12
Step-by-step explanation:
you see that yb=2 and that zc is double yb so zc=4. adn if ay=6 that means double ay= 12 or 8+4=12
Is that the question? Because it is trying to trick you.
x=83
y=-24
Those are your answers
Y=-4x-8, just graph it and plot points
Step-by-step explanation:

Answer:
$28.91
Step-by-step explanation:
The first step is to calculate the amount of the tip. You multiply the price (24.50) by the tip amount (18% or 0.18). The product is 4.41. Then, you add the tip to the bill. 24.50+4.41=28.91.