Help please due today

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

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?

What is 140% of 25? because i need