Need help on this please need help on this please need help on 1,2,3,12and6

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Write 17/20 as a decimal and as a percent.

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.