Answer:
(3x+1)(x+5)
Step-by-step explanation:
Sorry for my handwriting lol hope this makes sense
The slope should be 3/10.
For this case we have the following equation:

Let 
We have:

By definition, given an equation of the form 
The quadratic formula, to find the solution can be written as:

In this case we have:

Substituting in the quadratic formula we have:
See attached image
Answer:
Option B
$4/3=$1.33 per pound.
$9/8 = $1.13 per pound.
The second one is cheaper.
It’s B
Since 10^-6 means 6 0