Laim descended 5,050.25 feet and his elevation changed by -5,050.25.
I wanna say it’s d because of the way it’s set up, i hope this helps if not i’m really really sorry
DIFFERENTIATION
6+f(28+b(4)=6+112f+4bf
b=6+112f/-4f
b=1*6^0+1*112f^0/1*-4f^0
b=1+1/1
b=2
