Answer:
the answer is B
Step-by-step explanation:
the first solution is 20% acid, and say we'll be using "x" liters, so how many liters of just acid are in it? well 20% of "x" or namely 0.2x. Likewise for the 60% acid solution, if we had "y" liters of it, the amount of only acid in it is 0.6y.


Answer:
y - 9 = -6( x - 0)
y - 9 = -6x + 0
y = -6x + 9
Step-by-step explanation: