How do I solve this?

[Dyne]

Originally Posted by GameMaster

Thanks for the help and encouraging words, my friends. Luckily, there was no problem this challenging on the test. My teacher is cool, he'll teach us the concepts, and then the homework in the math book features normal to difficult problems. And then on the test, he always makes them as simple and straight-forward as possible.

I wish my Math teachers were like that.

Sigh.