How to use the MAX function in Geogebra version 4 - otherwise just TRACE -
Geogebra uses the IF[<condition>,<then>] command to split a domain for piecewise functions - enjoy!
Fixing basic settings in the View, Perspectives, and Options menu
Use "Graphics View to Clipboard" for COPY -
Graph the lines with equations f(x)=17x+900 and g(x)=22x+700. Rescale the axes and find the intersection point of the two lines.