128pi in^3
because:
Volume = Area of the base * height
Volume= pi*r^2*height
= pi4^2 * 8
= 128pi
9x-6-13x=94
-4x-6=94
-4x=100
x= -25
First, simplify the expression
Here you have three terms with
group them in the following way:


Then substitute s=-3 and t=5:

Answer: 19.
If you work out the equation the answer would be 5 but its not a definite answer.
You would divide both 12 and 7n by 7. To isolate the variable. You end up with 5+n. You can not say 5n because you cannot combine unlike terms. Your answer would be 5+n. Hope this helps