Me must show (i give all my points for all of these questions done! )

1) A 540 in^3 
2) H 420in^3
3) 0.336 ft^3

for these first three the work you can show is just the three numbers multiplied together 

4) T 240 in^3 
5) U 126 ft^3 
6) I 176 cm^3 

for these just write 1/2a * c * h 
a is the first number, c is the second number, and h is the third number

These are all I can help you with because I have homework to do 

Hope this helps :) 

Ok

Step-by-step explanation:

-3x-5=16

at 5 to both sides

-3x=21

divide by -3

x= -7