63
.10d + .05n = 5.25
.10(21) + .05n = 5.25
2.1 + .05n = 5.25
.05n = 3.15
n = 3.15/.05
n = 63
I think you mean volume.
V=8
Since you're not multiplying, you can remove the parentheses.
3b+6+2
which gives you . ....
3b+8
The answer is 14 dollars because 56 divided by 4 gives 14
Answer:

Step-by-step explanation:
3a²*2a³ = (2*3)(a² *a³)= 