Tasha has a gift card to buy tickets to the movie theater. The initial value of the giftcard is $120. The function M(x)=120-12x represents the amount of money, M, in dollars, that is still left on the gift card after purchasing x movie tickets at a cost of 12 each. The solution to M (x)=180 is x= DROP DOWN 1 which DROP DOWN 2 in terms of the given context.