Pls help ASAP I’m desperate

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)

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?