Answer:
I used the ruler to answer the math problem
Answer:
greaser
Explanation: they were just trying to protect themselves againsts the Socs they had every right to do whatever they did to the Socs
I guess formal and informal refer to two types of essay - you can write a formal essay where you avoid conversational language and such and where you need to be very professional, or you can write informally where you don't have to think about such things, it is very casual.