Friends from the math department often pick up lunch for each other. when it was Mr. Kim’s turn to make the food run , he bought 5 sandwiches and 3 bags of chips . He spent $29.50 . When Mr. Will went , he got 4 sandwiches and 4 bags of chips for $26 . How much does a sandwich cost ? How about the bags of chips ?

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.