Answer:
The slope is 
Step-by-step explanation:
Take the general equation of a straight line 
Here
is the slope of the line.
So let's get the equation of the line in the question in the same form.

Add
to both sides: 
Add
to both sides: 
Divide by
to get it into the general equation: 
Now compare it to the general equation to find the value of
. The value of
is the coefficient of
which we can see is 
Answer:
plastic = 45
metal = 30
Step-by-step explanation:
Answer:
7 digits can be used for each position
There are a total of 5 positions
N = 7^5 = 16,807 numbers
You have 7 choices for the first position, second position, etc.
X+ 4? idk I don't really understand the question...
For the given equation, either 3x + 7 = 0 or x + 7 = 0
Now,
or
So, possible values of x is : -7 and -7/3