Is biased because they are coming to the store which means they most likely prefer that
I think it is 6 and 16 but I could be wrong. Wait for more answers
You need to first start your body paragraph with your main idea or argument, then write all the evidence that you have for that main idea/argument then elaborate. Finally you need to close off the paragraph nicely so that is flows well into your next body paragraph
The first one because there is only one y value for every x value. you can also use the vertical line test in which you draw vertical lines and make sure the function only passes through it once at each point