Answer:
83%
Step-by-step explanation:
We can put this into a fraction to get the ratio of the new price over the old price

This will give us the percentage of how much was decreased.
The answer you get is .83
Bring 2 decimal places to the right to get 83 (converting from decimal to percentage)
You get 83 percent to be your answer
8.
2 terms on left side, 3 on right side
9.
All variables count as coefficients, so they’d be 8m, k, and -16k
10.
The constants are just numbers on their own, or without a variable next to it. Here it’d be 10 and -4
5x-13=15+7x
-13=15+2x
-28=2x
-14=x