Answer:
10x+2y
8c+2
0
Step-by-step explanation:
Log(2x*12)=3
10^3=2x*12
1000=24x
1000/24=x
x=41.667
6/4 = 1 1/2 gallons
2 - 1 1/2 = 1/2 gallon
She has 1/2 a gallon left over
I plugged the numbers into a triangle area calculator, which solved it this way:

, then i multiplied it by 3 to scale it, and came up with 120 or A
Part A
We have x = 4 and y = 3 paired up together.
This says that 4 pounds of potatoes cost $3
The price per pound (aka unit price) is y/x = 3/4 = 0.75 dollars = 75 cents.
Answer: 75 cents per pound
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Part B
The ordered pair (8,6) means x = 8 and y = 6 pair up together.
So in this case, 8 pounds of potatoes cost $6.
notice how y/x = 6/8 = 3/4 = 0.75 dollars = 75 cents here as well. So we get the same unit cost.