What is -23/20 as a decimal (long divison)

Which table shows a proportional relationship between miles traveled and gas used?

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.)

Math i have no idea how to do a and b