I'm not quite sure where to start, and answers would be appreciated ! : )

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?