Please help! There are 3 problems meaning that I am distributing 30 points.
Please answer all, PLEASE!!

If possible please show ur work
Thanks to whoever solves the three :)
Ur a legend! And a Life saver! I really appreciate it.
Thanks to those who are trying their best to help!

Please help There are 3 problems meaning that I am distributing 30 points Please answer all PLEASE If possible please show ur work Thanks to whoever solves the class=