If P(x)=x²+9x+8, find P(5)

Step-by-step explanation:

Step 1:  Plug in 5 for x

Given:

The distance y (in meters) that runner A travels on a track in x minutes is represented by the equation

To find:

How many meters per minute is runner A traveling.

Solution:

We have,

           ...(i)

Where, y is the distance in meters and traveling x minutes.

We need to find the slope of the above equation to find the number of meters  traveling by the runner per minute.

The slope intercept form of a line is:

          ...(ii)

Where, m is the slope and b is the y-intercept.

On comparing (i) and (ii), we get

Therefore, the runner is traveling 130 meters per minute.