2.) the difference of two numbers is 3 their sum is 13 find the numbers
4.)the school that Stefan goes to selling tickets to a choral performance on the first day of ticket sales the school sold 3 senior citizen tickets and 1 child ticket for a total of $38 the school took in $52 on the second day by selling 3 senior citizen tickets and 2 child ticket find the price of senior citizen ticket and the price of a child ticket