See tha attached pdf file and let me know how useful this answer is.
The coordinates of the vertices of the triangle are
(–8, 8), (–8, –4), and<span> (10, –4)</span>.
Consider QR the base of the triangle. The measure of the base is b = 18 units, and the measure of the height is h = <span>12</span> units.
The area of triangle PQR is<span>108</span> square units.
The graph of the function f(x)=(x+2)(x+6) is shown
The statement the function is negative for all real values of x where x <-2
Answer:

Step-by-step explanation:
You know that
and have to find

Use the main properties of exponents:
1. 
2. 
Note that

then

Now

Since
then 
If she walks both ways then one way = 1/3 mile