8 so it would be 2/8 plus 3/8
9*9=81. So Kurt baked 81 cookies.
4x^2 +15x + 13 tyats would be tour answrr
The solving for the first one should be like this

And the next part

After these manipulations just multiply them

And finally you need to square and simplify for the completed answer
Answer:
D. 480
Step-by-step explanation:
V= <u>LWH / 3 </u>
<u />
V = <u>12x12x10 / 3</u>
<u>V= 480</u>