I think its B because, the formation would be (x,y) so that means (5,-3)
 
        
             
        
        
        
2x=y
two times the number of minutes = the amount of pages 
        
             
        
        
        
Answer:
40k+45m
Step-by-step explanation:
5(8k)=40k + 5(9m)= 45m
 
        
             
        
        
        
Let us start with assuming the amount of coffee worth $20 a pound to be "x" pounds.
Now she wants to mix "x" pounds of $20 coffee with 70 pounds of $90 coffee. 
So the mixture would be (x + 70) pounds. 
And the value of mixture would be = 20·x + (90)·(70) = (20x + 6300) dollars.
She want to sell this mixture at rate of $30 a pound. Her earning would be = 30·(x + 70) = (30x + 2100) dollars. 
We know that the value of mixture would be equal to her earnings.
30x + 2100 = 20x + 6300
30x - 20x = 6300 - 2100
10x = 4200
x = 420
So, 420 pounds of $20 coffee would be used.
 
        
                    
             
        
        
        
Answer:
f(7) = 6
Step-by-step explanation:
f(7) is the y coordinate of the point on the given graph of y = f(x), whose x coordinate is 7.
From the graph of y = f(x), we see that f(7) = 6.