A pretzel factory has daily fixed costs of $1200. In addition, it costs 40 cents to produce each bag of pretzels. A bag of pretzels sells for $1.80. (a) Find the rule for the cost function c(x) that gives the total daily cost of producing x bags of pretzels. c(x)= enter your response here (Simplify your answer.) Part 2 (b) Find the rule of the revenue function r(x) that gives the daily revenue from selling x bags of pretzels. r(x)= enter your response here (Simplify your answer.) Part 3 (c) Find the rule of the profit function p(x) that gives the daily profit from x bags of pretzels. p(x)= enter your response here (Simplify your answer.)