What is a three digit number divisible by 3 and 4 and how

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?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Triangle abc has side lengths: ab = 3.5  cm, bc = 2.4 cm, and ac = 4.2 cmδabc ≅ δhjkwhat is the length of side hj?