Can anyone help me solve this equation? 4b+11=39

The system of equations graphed below has how many solutions? y = 2x + 2

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?