On a diving exercise, a submarine rose 20 ft, dove 40 ft, rose 7 ft, and rose 13 ft. What was the change in depth after the excercise?
Can someone write and solve an equation showing all your steps? thanks!!

Question

On a diving exercise, a submarine rose 20 ft, dove 40 ft, rose 7 ft, and rose 13 ft. What was the change in depth after the excercise? 
Can someone write and solve an equation showing all your steps? thanks!!

anonymous · Answer

So why do you want someone to write and solve the equation?  Are you actually piloting a submarine, or is this homework?  If it's homework then you should try to figure it out on your own.  We will help you with the parts you can't figure out yourself.

anonymous · Answer

they are for corrections, and i need help with all of it

anonymous · Answer

Isn't this just a subtraction/addition problem?

anonymous · Answer

Start with 0, when it rises add the number, when it dives, subtract the number.  What is your final number?

anonymous · Answer

All you have to do is draw a picture. What part are you stuff at?

anonymous · Answer

@*cat*  try drawing yourself a little picture of the sub going up and down... maybe put it on a vertical number line.  then see if you can get the idea and the equation

anonymous · Answer

cool, i'll try it out. thanks!!!