Answer:
D
Step-by-step explanation:
An exponential function which crosses through (1,3) and (2,9) will have a base of 3 since the y values are multiples of 3.
3^1 = 3
3^2 = 9
This means that the function is y = 3^x.
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
6 oz, 19lb 
1 lb, 20lb
2 oz, 20lb 2oz
6oz+2oz+1lb= 1lb 8oz
 
        
             
        
        
        
Answer:

Step-by-step explanation:

We know: the denominator must be different than 0.
Therefore
 <em>add 8 to both sides</em>
        <em>add 8 to both sides</em>

 <em>divide both sides by 2</em>
             <em>divide both sides by 2</em>

 
        
             
        
        
        
Answer:
0
Step-by-step explanation:
Approximately 0.2% of the apples will be more than three standard deviations above the mean size. In a bin of 100 apples, 0.2% of 100=0.2% apples, this rounds down to zero apples that size or larger. (In a bin of 500 apples, there could be one apple of that size.)