Answer:
Both equation represent functions
Step-by-step explanation:
The function is the relation that for each input, there is only one output.
A. Consider the equation

This equation represents the function, because for each input value x, there is exactly one output value y. 
To check whether the equation represents a function, you can use vertical line test. If all vertical lines intersect the graph of the function in one point, then the equation represents the function. 
When you intersect the graph of the function 
 with vertical lines, there will be only one point of intersection (see blue graph in attached diagram). So this equation represents the function.
B. Consider the equation

This equation represents the function, because for each input value x, there is exactly one output value y. 
When you intersect the graph of the function 
 with vertical lines, there will be only one point of intersection (see green graph in attached diagram). So this equation represents the function.
 
        
             
        
        
        
Answer:
30 
Step-by-step explanation:
200x.15=30
200-30=170 
 
        
                    
             
        
        
        
Answer:
Range is 8
Step-by-step explanation:
To find range you need to subtract the largest number with the smallest. The largest is 28 and the smallest is 20. 
28-20=8
 
        
             
        
        
        
Answer:  
 , where n is a natural number.
Step-by-step explanation:
A series can be represented in a summation or sigma notation. 
Greek capital letter, ∑ (sigma), is used to represent the sum. 
For example: 
, where n is a natural number.
The given series : 1,4,9,16 which can be written as 
 .
So , we can write it as 
 , where n is a natural number.
 
        
             
        
        
        
Answer:
32,000 or 345,600
Step-by-step explanation:
if you have 100 x 320  will make 32,000 if you times the 1080 with the 320 it will be 345,600 now add them together isss 377,600 btw np