How do you write 200 trillion in scientific notation?

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

What is the answer to the question 5x+2x