Please reply quickly and explain if you can thanks

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)

Which of the following is another way to express the difference between -5 and 8?