The part of earth that is molten is the?

Below the crust lies a layer of very hot, almost solid rock called the mantle. Beneath the mantle lies the core. The outer core is a liquid mix of iron and nickel, but the inner core is solid metal. Sometimes, hot molten rock, called magma, bursts through Earth's surface in the form of a volcano.

The question to your answer is illinois amigo

5×^2+20-15 or -(5x^2-20+15)