(100 pt. question & brainliest) to whoever can help me solve this (I’ve been struggling on this for quite a bit.)

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)