Can someone pls help me ASAP pls

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)

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)