Mara needs to mix some 30% acid solution and some 70% alcohol solution to end up with 20 liters of 54% solution. how many liters of the 70% solution will she need? type in your numerical answer only; do not type any words or letters with your answer.

a = volume of 30% solution in liters

b = volume of 70% solution in liters

0.3a + 0.7b = 0.54(a+b)

a+b = 20

solve the system of

a = 8

b = 12

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.