Help please what is the inverse of the function

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)