I really Need help solving this problem!

What’s the ratio in simplest form if you count 14 robins out of 150 birds

The graph shown is the graph of which function?

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible