Answer:
3:1
Step-by-step explanation:
240 necklaces in one month
180-sold on website
60- sold in shop
180:60
then you would simplify
so the final answer is 3:1
The average rate of change formula is 
(-2-5)/(6-(-1))=-1
Answer: 20-2x/-4
Step-by-step explanation:
To actually solve for y as a number, you need two equations.
For this case move the 2x to the other side, making the equation -4y=20-2x.
Then divide by -4 on each side making the equation y=20-2x/-4.