Help me out with this question look at the picture

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?

Marco states that 7.696696669…… is a rational number because it is a repeating decimal. is he correct? justify your answer.

What is the answer to question 11? richard simplified an expression in three steps,as shown taking 04.10 segment one exam part one (flvs)