Hong spends $14 each time he travels the toll roads. He started the month with $210 in his toll road account. The amount, A (in dollars), that he has left in the account after / trips on the toll roads is given by the following function. A(t)=210-14t Answer the following questions. (a) How much money does Hong have left in the account after 8 trips on the toll roads? $ (b) How many trips on the toll roads can he take until his account is empty? trips X $