I need help will someone please help me? T-T

Which fraction below is equivalent to 10/12?

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes