Find the distance between the points (1,3) and (3,4)

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?

Factor the expression using gcf 9b+45

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25