A cell-phone company bills its customers each month according to the formula
C=0.12m+18
where C is the total charge, in dollars, and m is the number of minutes used that month.
What is the best interpretation of the number 18 in this formula?
A cell-phone company bills its customers each month according to the formula
where C is the total charge, in dollars, and m is the number of minutes used that month.
What is the best interpretation of the number 18 in this formula?