Answer all the questions if possible, due also, is what i did for the top answer right?

1a. It does say y is "less than 8", which means 7, 6, 5, 4, etc. So it should be y < 8, with the arrow going from 8 to the the left. 
Everything else in 1 is correct. 

For 2, you're just picking out which of the given numbers satisfy the inequality, for example
a. 14, 15, 16 are solutions. 13 is not because it is less than 14.

3. Same thing as 1 

It’s 24.6 after you round to the nearest tenths the answer should be 25.0