What’s the answer for 3 over 4 in integers?

Janet is mixing a 15% glucose solution with a 35% glucose solution. this mixture produces 35 liters of a 19% glucose solution. how many liters of the 15% solution is januet using in the mixture? a. 25 liters c. 28 liters b. 7 liters d. 10 liters

What is the value of x? enter your answer in the box. photo attached.

Which graph represents the equation y =4x