Hello!
To find our answer, we will want to multiply our circumference by 15. The reason why is because the circumference is the distance around the circle, or tire in this case. If it goes around 15 times it will have traveled this distance 15 times.
Therefore, we find our circumference, multiplying pi by our diameter. It appears that the total height is 26 in.
26[tex] \pi [/tex]≈81.68
Note that it wants us to round for the nearest FOOT. Therefore, we divide our answer by 12 and round to the nearest whole number.
81.68/12≈6.81≈7
Therefore, it will have traveled 7 feet.
I hope this helps!