When sedimentary rock go to the bottom of a seafloor it sticks together over time and turns into metamorphic rock. Then metamorphic rock melts and when it cools down it turns into igneous rock. This process happen over and over and its called rock cycle.
Answer: 99 dollars, I believe.
Explanation: If Adam already has 90 dollars then the amount he earns in interest will be 10% of that. You could divide 90 by 10 or you could do 90 x .10, which would both equal 9. Add that 9 to the 90 you already have and you get 99 dollars.
