First, define an integer variable and assign it any value of your choice. Then you'll need to perform the following operations with it: (JAVA) 1. Add 9
2. Multiply by 2
3. Subtract 4
4. Divide by 2
5. Subtract by the variable's original value
6. Finally, display what the end result is.
7. Once your math / code is complete, double check your work by seeing what happens with the end result when you use different starting values. You should notice something "interesting".

Dereck works for long hours on his computer.  he frequently experiences physical strain by the end of the day because he does not follow an important rule of ergonomics with respect to the use of keyboards.  which of the following actions of dereck could lead to physical strain? a.  placing the keyboard exactly in front of him while typingb.  keeping hands and wrists straight while typingc.  using wrist pads throughout the dayd.  pounding at the keys on the keyboard while typinge.  resting his hands on the keyboard when he is not typing