Answer:
What are the possible answer??/
Step-by-step explanation:
Jon ran 21km (7+14 because robert ran 14 less so you add the 14 additional km to jon’s total)
Greater then or less then
Answer:

Step-by-step explanation:
So, for 60 square feet they charge = 287
So, for 1 square foot they charge = 
If they charge the installation fee this becomes = 
We can write an equation to calculate cost by using this 
Where x is the amount of square foot