The population of California =  people.
 people.
Land area of California =  .
. 
We have to determine the average number of people per square kilometer.
Average number of people per square kilometer =
 Land area of California  Population of California
 Population of California
= 
= 
Therefore, the average number of people per square kilometer is   .
.
It is represented in scientific notation as Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.
 
        
             
        
        
        
Answer: d
Step-by-step explanation:
Using the linear equation y=mx+b, you are given m (the slope) and b (the y-intercept). m=2 and b=-8. Therefore, y=2x-8
 
        
             
        
        
        
The second equation is <span>-5-2y=2, then 
</span>
<span>-2y=2-(-5),
</span>
-2y=2+5,
-2y=7,
y=7÷(-2),
y=-3.5.
The first equation is 2x+5y=16, subtitude y=-3.5 in this equation, then
2x+5·(-3.5)=16,
2x-17.5=16,
2x=16-(-17.5),
2x=16+17.5,
2x=33.5,
x=33.5÷2,
x=16.75.
Answer: (16.75,-3.5)
        
                    
             
        
        
        
None of them are correct.