644,400,000 is already in standard form.
Answer:
82 units
Step-by-step explanation:
7 x 3 = 21
21 x 2 = 42
7 x 2 = 14
14 x 2 = 28
2 x 3 = 6
6 x 2 = 12
42 + 28 + 12 = 82
ANSWER

EXPLANATION
The given equation is:

We integrate with respect to t to get,

The initial condition is y(0)=20
We apply the initial condition to get,


This implies that;



Or

Given:
The graphs of two functions f(x) and g(x).
To find:
The correct statement about the functions.
Solution:
In the given graph blue line represents the graph of f(x) and the red line represents the graph of g(x).
From the given graphs it is clear that the graphs of the functions interest each other at point (-2,4). It means,


So, we conclude that

Thus the option D is correct.
We can check other options.



So, option A is incorrect.


So, option B is incorrect.


So, option C is incorrect.
Therefore, the correct option is D.
The value of x is equal to 89.4