Margot is sewing a ribbon on a seam along the perimeter of a square pillow the side length of the pillow is 2x2 + 1 inches, and its perimeter is 4(2x21) inches. if x 3.5, how much ribbon does she need?

What is the value of the expression below? (81^2)^1/8

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

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