Answer:
Step-by-step explanation:
D
We will use the followin property of logarithms:

So, we have

If you multiply both sides by 4, you get

Answer: x=25, y=19
Step-by-step explanation: Because the triangle is equilateral, all the angles must be equal to 60 degrees. So 2x+10=60. 2x=50 and x=25. Then the same thing: 3y+3=60. 3y=57, y=19.
The correct answer is the second one