The answer would be 16 S'mores and the limiting reactant would be the grahams. 
(This is assuming that S'mores would need 2 grahams, 1 marshmallow and 1 chocolate piece.)
Limiting reactant would be the reactant that runs out first. 
Let's take your problem into account and see what we have:
48 marshallows
32 grahams (2 x 16 per pack)
45 chocolate pieces (5 x 15 pieces per bar)
Since need 2 of the grahams per S'more then the maximum yield of the grahams is 16 S'mores. 
The maximum yield of marshmallows is 48.
The maximum yield of chocolate is 45. 
Since you cannot make S'mores without the grahams, then you can only make 16 S'mores before the grahams run out. 
 
        
             
        
        
        
Answer:
every pair is being multi by the next number 
Step-by-step explanation:
2 x 3 =6
3 x 4 = 12 so the second number goes up one every time 
 
        
             
        
        
        
Answer:
C. Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department.
Step-by-step explanation:
Sampling Bias is case, in which some section of population have higher or lower chance of being selected in sample than others. 
'Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department'. This case is of Convenience Sampling, where person selects sample only as per his/ her convenience. 
Elizabeth has conveniently chosen sample workers from her department, so they have higher chance of being in sample, others have lesser chance.  Hence, this is Sampling Bias
 
        
             
        
        
        
Answer:
5 km
Step-by-step explanation:
We are given the distances walked by Maria;
We are required to determine the displacement from her starting point;
- We are going to use Pythagoras's theorem;
 
a² + b² = c²
Taking, the distances towards south and towards west as the legs of the triangle;
Then, c² = 3² + 4²
                = 25
          c  = √25 
              = 5 km
Therefore, the displacement from the starting point is 5 km
 
        
             
        
        
        
Volume is Length x width x height. So what are three numbers that multiply to 90?
30x30x30=90