Question

A hotel chain charges $85 each night for the first two nights and $55 for each additional night's stay. The total cost T is a function of the number of nights x that a guest stays.
T(x)={ if ) 0 <_=x<_=2, if x>2)

(a) Find the expressions for a and b in the piecewise function defined above.
a = 85x
b = 170+55(x-2)??

(b) Find T(2), T(3), and T(5).
T(2) = $
T(3) = $
T(5) = $