Answer:

Step-by-step explanation:
The equation of the curve is

To find the equation of tangent we need to differentiate this equation w.r.t x
So, differentiating we get

This would give the slope of the tangent line at any given point of which x coordinate is known. In the present case it is 
Then slope would accordingly be

= ∞
For,
, 
Equation of tangent line, in the point slope form, would be 
Average speed = total distances / total time
3115.8 / 7.2 = 432.75 mi/h
Answer:
-21/4 + 3s/4
Step-by-step explanation:
Answer:5400
Step-by-step explanation:9•6= 54
Add both zeros from 900 at the end and it’s 5400