Step-by-step explanation:
We want to find how many miles per minute Joe runs. This means, we need to simplify the equation:

so that the number on the bottom is 1. How do we do that?
Simple.
Just divide 12 / 84
Answer:
Joe runs approx. 0.143 miles per minute.
Answer:
Table of values







<em>See attachment for graph</em>
Step-by-step explanation:
Given

Solving (a): Make a table
Considering the values of x from 0 to 5, we have:
When 

When 

When 

When 

When 

When 

So, we have:







Solving (b): The graph
See attachment