Find the 15th term of an arithmetic progression of which the first term is 2.5 and the tenth term is 16

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?

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

In the diagram of circle o, what is the measure of zabc?