A few examples:
4x+5y
1232x + 564y + 5354z - 7642 a
Basically any number with a variable that you can not use again.
Answer:
B. E(s) = s^3 - 29.
Step-by-step explanation:
The amount of empty space 
inside the cubic box is equal to the volume of the box minus the volume of the softball.
If the side length of the cubic box is 
, and the volume of the softball is 
, then the amount of empty space inside is
,
where 
is the volume of the cubic box.
Since it matches the equation we got above, choice B stands correct.
Answer:
A.2304
B.5625
C.6776
Step-by-step explanation:
The easiest way to show you is by using calculator. If you can't, try using Khan Academy if you want.
Nice computer my dear sir
