Does a sock have one line of symmetry

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.