What is the answer of the question above

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9