Answer:
-2=x
Step-by-step explanation:
4x+12=-2x
Subtract 4x on both sides
12=-6x
Divided by -6 on both sides
-2=x
Answer:
D. 65 degrees
Step-by-step explanation:
If two sides are congruent the corresponding angles are also congruent
Vertical angles are congruent, so
107=3x-4
3x=111
x=111/3=37°
Answer:
$15.50
Step-by-step explanation:
0.5 (1) + 5 (3)
0.5 + 15
15.50
Answer:
C. Slope and 
Step-by-step explanation:
We're missing the graph itself, but I can make an educated guess:
- Assuming x = volume and y = mass:

density = mass/volume
x = volume = run
y = mass = rise
mass/volume = rise/run = slope
The slope of the line (assuming the graph is purely linear) represents mass/volume, which is the formula for density.
I had to Google the density of silver itself. Do the math from the graph for a more appropriate answer, as the graph may be less scientifically precise.