The function f(x) represented by the straight line in the graph is
and f^-1(x) is

Answer d; a supplementary angle = 180°, so if that angle = 150°, y would = 30°.

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,