$1,083
In order to find the average, you have to add the cost of each of the surveys together and then divide that number by three, because that's how many surveys they are.
<span>1,250 + 925 + 1,075 = 3,250
3,250 divided by 3 = 1,083
Therefore, the average cost of $1,083</span>
In my view all of the written above fits to definition of colloquial English. It's type of informal speech that applies idioms, slang etc. The one thing is not recommended in colloquial English is the usage of rude words. But it depends on region where you speak. There are differend idioms and slang in every region.
In paragraph 14, you just need to look at the text and think about what the paragraph is mainly about, then you’ll have your answer
