Which expression is equivalent to (5ab)^3/30a^-6 b^-7

Construct the graph that models the given situation

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 is the focus of a parabola with equation y2=4x