
We know that : (a - b)(a + b) = a² - b²

We know that : 1 - sin²x = cos²x



We know that : sec²x = 1 + tan²x







Region B
The solution of two intersecting lines is the point that both share in common. From a point of view, it is the point where the two lines meet. In this case, the point is in quadrant 1, or Region B.
300 represents the initial value or the value that you started with.
1.15 is the rate that the function increases by over t (time)
Am presuming you mean in standard form:
692 004 = 6.92004 * 10⁵