Which is bigger 9/5 or 9/10

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

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?