Answer:
the answer should be x= -7 hope this helps!
Option C is the right way to solve the equation.
3 gallons of acid = 100% concentration acid
? (water+acid) gallons = 15 concentration acid
Note: Every gallon of water added reduces the percentage concentration of acid. Therefore, the relationship is inverse proportionality.
Solution:
Total number of gallons (water+acid) = (3*100)/15 = 20 gallons
Therefore, gallons of water = 20-3 = 17 gallons
The answer your looking for is 7.5ft by 1.5ft hope this helped have a nice day :)