A user is charged $550 montly for a particular mobile phone plan, inclusive of 100 free text, Messages. Messages in excess of 100 are charged $1.00 each. Represent the monthly bill for the mobile phose plan using the function t,m
, where m is the member of messages sent in a month
assuming m > 100, then
t(m) = 550 + 1.00(m-100)