39. * short response you make and sell flags for $10 each. each flag
requires $4.50 worth of fabric. you pay $12.99 for a kit to punch holes to
hang the flags. your expenses (in dollars) are given by the expression
4.50m + 12.99 where m is the number of flags you make. your income is
given by the expression 10s where s is the number of flags you sell. your
profit is equal to the difference of your income and your expenses.
a. you make 50 flags and sell 38 of them. find your income and your
expenses. then find your profit.
b. explain how you could use a single expression to determine
your profit.