Answer:
Refraction is what happens when light passes through some medium and changes it's direction because of it. For instance, when light travels through a lens light is bent as it goes from air to glass and back to air again. :)
Y = 3x + 0 is what i got though check my math to be sure
Answer: maybe 20
Step-by-step explanation:
or find it out yourself
The variable x always equals 1
