1. 22 is 11% of what number? i need urgently

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

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