Oh wait a minute i have to write this down
Answer:
B. (x+4)(x+i)(x-i)
Step-by-step explanation:
Let 
We can factor this polynomial by grouping:

We factor further to obtain:


We apply difference of two squares to get:

Answer:
$160
Step-by-step explanation:
80 * $2
$160
Answer: $160
y = 4 + 3x
4 being the entrance cost and 3x being the 3 dollars per pound