help A grocery store buys items and then applies a markup of 75%. What is the retail price of an item that originally costs $5.40?

Maurice has 54 fewer comic books than rebecca.they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =