7x + 3 is the final answer
Answer: A wheel on the outer rail travel 12.57 ft more than a wheel on the inner rail of the track.
Step-by-step explanation:
Since we have given that
Radius of inner circle = 57 ft
As we know the formula for "Circumference of circle":

Since we have also mentioned that there is 2 feet wide circular track for a camera dolly.
So, Radius of outer circle will be given as

So, Distance = Circumference is given by

Hence, Difference between the outer rail travel than a wheel on the inner rail travel is given by

Therefore, A wheel on the outer rail travel 12.57 ft more than a wheel on the inner rail of the track.
Answer:
24 $
Step-by-step explanation:
5 times 3 is 15
3 times 3 is 9
15 plus 9
=24
YUH
Just add the two equations together.
2b = 18
b = 18/2
b = 9
9 = k + 10
9 - 10 = k
k = - 1