Select the correct answer from each drop-down menu. garry is cooking for his friends. he wants to buy some potatoes, which are priced at m dollars a pound. he has already spent b dollars on other ingredients. the following expression represents the total amount of money that garry would spend after buying x pounds of potatoes. mx+b if the amount already spent by garry on other ingredients, b dollars, is halved, then the value of m will . not change be half of the orginal amount be doubled if the cost for each pound of potatoes, m dollars, is tripled, then the value of b will , be one-third of the orginal price be tripled notchange and the value of mx will . be one-third of the orginal price be tripled notchange