I need the answers please help me help me help me

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Add the fractions and simplify 1/2+ 1/3

Asap (i need to finish this quick) graph complete the sequence of transformations that produces △x'y'z' from △xyz. a clockwise rotation ° about the origin followed by a translation units to the right and 6 units down produces δx'y'z' from δxyz.