The answer is 5x/2 because all you have to do is add 3x + 2x too make 5x and take 4-2 which is 2 and since it can't be simplified any more, just do 5x/2. Hope this helped! :)
The answer is y=-3 hope it helps
**The missing image is attached below**
The correct answer is: 400 ft^3
Explanation:The volume of the square pyramid =

Where a = base = 10 ft
h =

Plug in the values in the equation:
The volume of the square pyramid =

=
400 ft^3
We need to know what book and stuff
Add 15 and 12 then divided by 144