Pleaseee helpp me question 1 and 2

Which expression shows the sum of the polynomials with like terms grouped together

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

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.