You would have to solve for x the plug in the answer for c into the next equation to find your answer
4x+1 = 2x+23
4x = 2x+22
2x = 22
x = 22/2 = 11
x = 11
3x-8 = 3(11)-8 = 33-8 = 25
BC=25
Answer:
2 3/10
the line in the middle represents 1/2 because 5/10 is equal to 1/2
Y=10x+1700 if you start counting when there is 1700 gallons in the tank.