The starting number is 245.So it’s already pretty deep in the water,then it goes down 83 feet MORE.so that’s 245+83=328 feet. Then the submarine goes UP 103 feet from that point,so 328-103=225 feet,so its closer to the surface than at the beginning(245ft)
m = np-6n
You just need to multiply both sides by n
You have to multiply by 1000
80 cents Because $1.89 minus $1.09 equals 80 cents