Answer:
(-2, 7); (See attachment)
Step-by-step explanation:
x + 2y = 12
7x + 2y = 0
x = -2y + 12
Solve for y:
7 (-2y + 12) + 2y = 0
-12y + 84 = 0
-12y = -84
y = 7
Solve for x:
x = -2 (7) + 12
x = -2
x = -2, y = 7
The submarine needs to move up, so the rate the submarine needs to move is positive.
I = (PTR)/100
1450=(5000*1*R)/100
1450*100=5000R
145000/50000=R
29=R
