They ran 1 and 5/6 miles. This is just under 2 miles, so no, they did not run 2 miles.
A- 130, 130, and 50
b- 7 and 10
5 x 2=10
10 (divided by) 2=5
Sorry i did not just put a division sign, my phone did not have the sign. :(
ANSWER
The radius is 4
EXPLANATION
The given equation is:

We complete the square to get the expression in standard form:


We factor using perfect squares to get:

This implies that,

Comparing to

The radius is r=4
Answer:
To answer items such as this, we directly substitute the a + 2 to the all the x's in the function such that,
f(a + 2) = (3 + a + 2) / (a + 2 - 3)
Simplifying the function generated above,
f(a + 2) = (5 + a) / (a - 1)