Lena wrapped the gifts and hid them before her mom came home. what is the independent and dependent clause?

Kyle and his brother have a marble set of the marbles 12 are blue this represent 50 over a hundred of all the marbles what decimal is equivalent to 50 / 100

This passage from chapter 4 of story of my life is an example of which story of plot

Create a blog to convince an audience to either support or oppose a proposal to require all students to wear uniforms in school