Answer:
4
Step-by-step explanation:
3x² + 2x - 4
3(-2)² + 2(-2) - 4
3(4) - 4 - 4
12 - 4 - 4
12 - 8
= 4
Assuming you're just computing the volume, i.e.

we should convert to cylindrical coordinates first, setting

so that the volume is given by

which has a value of

.
Answer:Mark
Step-by-step explanation:Diva
When x=42 that means it is 8x6 so that means that the y = 120 becuase its 20x6
answer= y=120