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. if the amount already spent by garry on other ingredients, b dollars, is halved, then the value of m will . if the cost for each pound of potatoes, m dollars, is tripled, then the value of b will , and the value of mx will .