6. For each function, /(x), determine the equation of the inverse, f(x), with a restricted domain. a) f(x) = vx+7 b) f ( x ) = Vx+3IB. In Canada, ring sizes are specied using a numerical scale. The numerical ring size, y, is related to finger circumference, x-35 2.55 ' a] What whole-number ring size corresponds to a nger circumference of 49.3 mm? x, in millimetres, by the function y = h] Determine the equation for the inverse of the Function. What do the variables represent? c] What finger circumference corresponds to a ring size of T