Set up an equation and solve for the unknown number. “The sum of 4 and a number is equal to twice that same number”

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?

Acar loses a quarter of its value every year. it is originally worth $35,000. to the nearest dollar,how much will the car be worth in 8 years?

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?