Answer:
Slope is 2/3
Step-by-step explanation:
What you can do is use the first two coordinates. This would get the formula to look like this:

From here you get ⅔ for the slope.
 
        
             
        
        
        
Let's first define variables.
 y: number of shares of $ 10
 x: number of shares of $ 12
 We write the system of equations:
 10x + 12y = 210
 y = 2x + 5
 Solving the system:
 x = 75/17
 y = 235/17
 Answer: 
 she has: 
 75/17 shares of $ 12 
 235/17 shares of $ 10
 
        
                    
             
        
        
        
Answer:
-cos(2x)
Step-by-step explanation:
I did trig last year and tutor a trig class this year :)
 
        
             
        
        
        
Answer:
42*7
Step-by-step explanation:
 
        
                    
             
        
        
        
it would be C i think hope this helps