Turn this into a equation the sum of twice r and three timea s is identical to thirteen

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?

Answer! if you don’t mind, can you explain

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8