Step-by-step explanation:
Formula:
d×3.14=C
or
r×3.14×2=C
d=diameter
r=radius
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.
-4 is the x-intercept for your equation
Since you are trying to figure out how many miles she can drive in 1 hour and you already have half of that hour, all you would need to do is double that number.

×

=

Now, all you would need to do is simplify the answer.

= 1

or 1.6
The answer would be, Suzy can drive 1

or 1.6 miles in 1 hour.
I hope this helps!
Answer:
The real numbers are any number that corresponds to a point on the line Real and can be classified into numbers natural, whole, rational and irrational. In other words, any real number is between minus infinity and plus infinity and we can represent it on the real line .