Work put and simplify where possible

2/5 + 1/3

5/9 - 1/2

Which system of linear inequalities is graphed? can somebody please

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?