Which value would not be part of the domain of the inverse of the given relation? {(9.-14).(-7,4), (4,-8)

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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 one is the correct answer, and why?