Answer:
<em>D. 5.385 grams per cm^2</em>
Step-by-step explanation:
Density can be found using the equation:
p = m/v
(p: density, m: mass, v: volume)
Plug in the information we know.
m = 70
v = 13
So
p = 70 / 13
p = density = 5.385
D. 4(x+5)(x-5)
you have to divide the first number out of both terms, then you have the answer. hope this helps
im pretty sure it is 4.18x10^13
B is 12
c is 6 because you don't count the zero