Answer:
-7
Step-by-step explanation:
6^2=36 36/4=9 so 5-9=-4 minus 3 = -7
A 4 years because it is half the number he wants it to double in
Volume of the first dwarf planet (r₁ = 832 mi):

Volume of the second dwarf planet (r₂ = 829 mi):

So difference between the volumes is:

or if we want exact value (we use (a³-b³) = (a-b)(a²+ab+b²) ):
Answer:
5 is the leading coefficient