1/7x + 3= 15 what is x?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Type the correct answer in each box, round your answers to the nearest integer 20 25 30 in the figure, the perimeter of hexagon abcdef is approximately w units, and its area is square units