(-2,4)
2(1/2x+5)+5x=-2
x=-2
plug it back into and equation
y=1/2*-2+5
y=4
Then, the total weight would be: 3 * 14 = 42 Ounces
Answer:
15 mL of the solution with 20% water will be needed.
Step-by-step explanation:
Use the inverse relationship
10 mL * (18-15)% = x mL * (20-18)%
x = 10 mL * (3/2) = 15 mL
