Anew business started and is selling calculus notes. for the first year, the fixed costs for setting up the new production line are $65. the variable costs for producing each set of notes are estimated at $4. the sales department decides that the notes can be sold during the first year at a price of $17 each. a. find c(x), the total cost of producing x sets of notes. b. find r(x), the total revenue from the sale of x sets of notes. c. how many sets of notes must the business sell in order to break even? a, b, and c aren't choices they are questions so me with them and maybe explain them as well