In general, the probability of a disjunction is

In this case, A and B are mutually exclusive, so 
This simplifies the formula to

Volume=legnth times widht times height
since this is a rectangle and multiplication is commutative
doesn't matter what order wr multiply
V=5*5*12
V=300 in^3
16/ 2.10 = 7.6 ounces per $1
20/ 3.15 = 6.3 ounces per $1
So which do you think?
Answer:
5x +2x+14 =14x-7
7x+14=14x-7
14+7=14x-7x
21 divide bye 7=7x divide bye 7
3=x
Step-by-step explanation: