Answer:
The value of variable r in the equation
is 
Step-by-step explanation:
We need to find the value of variable r in the equation 
Step 1: Write the equation

Step 2: Subtract 4 on both sides

Step 3: Divide both sides by 4

So, The value of variable r in the equation
is 
Answer:
20.2
Step-by-step explanation:
181.1 divided by the amount of days Susie ran.
171,008 is the correct answer,,,