Answer:
6 hours
Step-by-step explanation:
We know that he can dig 7 holes every two hours. 21 divided by 7 is 3, and 3 x 2 hours equals 6.
the common ratio is 1/5
the scale factor or start value is 500
Well you have to start of by finding the circumference of the tire, which you can do with the equation 2πr. If the radius is 1.2 feet, you just plug this into the equation to get 2.4π, which we will round to 7.5. After 10 rotations, you should've traveled approximately 75 feet