Which is the function represents by the table (-1,3,) (0,1,) (1,-1, ) (2,-3)

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

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.)

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g