Find the constant sum for an ellipse with foci f1 (0, -12), f2 (0, 12) and the point on the ellipse (9, 0).

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?