Which of the following describe an angle with a vertex at 4?

Use the quadratic formula to solve 5x=6x^2-3,what are the values of x?

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Write a story that matches with the expression 42x-5 pls hurry