True or false plz help

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

The velocity of sound in air is given by the equation , where v is the velocity in meters per second and t is the temperature in degrees celsius. find the temperature when the velocity is 329 meters per second by graphing the equation. round the answer to the nearest degree. show your work.

Question 2(multiple choice worth 1 points) simplify 7 square root of 3 end root minus 4 square root of 6 end root plus square root of 48 end root minus square root of 54. 11 square root of 6 end root minus 7 square root of 12 11 square root of 3 end root minus 7 square root of 6 negative 3 square root of 9 4 square root of 9