
Collecting like terms,

Since the signs change when its position changes.

Answer:
proper because the numerator is lower than the denominator
Answer:
to find theoretical probability, devide the favorable outcomes by the total possible outcomes
to find experimental probability, for example on a coin, devide how many times it landed on heads by how many times you flipped it
i hope this helps :)
Multiply the length*width*height to get the volume of the prism then, take out the difference between the volumes
Volume of the prism= 1018464
Then just subtract