The balls have the same mass but the table-twnnis ball is much less dense then the golf ball.
You earn $2,400 in interest over the 2 years
You answer would be 27, if I did my maths correct.
You get 27 by doing:
9*4=36
36-9=27
Correct me if I am wrong thank you!
5w + 9z = 2z + 3w
Move terms with w to the left - subtract 3w from both sides
2w + 9z = 2z
Subtract 9z from both sides
2w = -7z
Divide both sides by 2
w = 
The last one because a perpendicular triangle would be drawn from the vertice to the bottom.