We are given this

write it as the difference of cubes

use the formula for the difference of cubes

Now use the formula for the difference of squares as 

Answer:
The awnser is C. 4 hours
Step-by-step explanation:
It takes her 2 hours two walk 1 mile so 2*2 is 4
Answer:
45
Step-by-step explanation:
Let the three quantities be x, y and z.

Answer:
g(-3) = -4
Step-by-step explanation:
g(-3) = 2(-3) + 2
g(-3) = -6 +2
g(-3) = -4