Which relation is a function?

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

If g^-1(x) is the inverse of g (x) which statement must be true

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"