The united states has been consuming iron ore at the rate of million metric tons per year at time , where is measured in years since 1980 (that is, corresponds to the year 1980), and find a formula for the total u. S. Consumption of iron ore, in millions of metric tons, from 1980 until time.

The correct answer is wood^4

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

Hey, i dont see it either