Question 1085048: A user is charged 300 pesos monthly for a particular mobile plan,which includes 100 free text messages.Messages in excess of 100 are charged 100 pesos each.Represent the amount a consumer pays each month as a function of the number of messages m sent in a month.
Answer by emathwiz(15)   (Show Source):
You can put this solution on YOUR website! Pesos- f(m)
You start by paying 300 pesos for the plan so add a +300 to the end.After 100 free messages you need to pay 100 pesos each.
If, m>=100 then,
f(m)= 100(m-100)+300
If, m<=100 then,
f(m)= 300
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