12c + 3a + 6d = total bill when d stands for dessert and a stands for appitizer and 12 stands for drinks and meals
The prefix means 8.How to remember this is a octagon which has 8 sides.Therefore Octa means eight.I hope this helped.
One expression could be three x to the power of two. Let me know if that's right :)
16 squared is 256 because if you multiply 16 times 16 you get 256
