Answer:60
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Step-by-step explanation:        
We have been given that a bean plant grows at a constant rate for a month. after 10 days, the plant is 30 centimeters tall. after 20 days, the plant is 50 centimeters tall.
First of all we will find slope of our line using given points.

Upon substituting coordinates of our given points in slope formula we will get,


Therefore, slope of our given line is 2.    
Since the equation of a line in point slope form is 
. 
Upon substituting m=2 and coordinates of one point in above equation we will get,

Therefore, the equation that models the height of the plant (y) after x days will be 
.
 
        
                    
             
        
        
        
Answer:
   (d)  (7, -5)
Step-by-step explanation:
The x-coordinate is listed first in an ordered pair. It is found on the horizontal scale. The point is on the grid line halfway between 6 and 8, so is presumed to have an x-coordinate of 7.
The y-coordinate is listed second in an ordered pair. It is found on the vertical scale. The point is on the grid line halfway between -4 and -6, so is presumed to have a y-coordinate of -5.
The coordinates of point A are (x, y) = (7, -5).
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<em>Additional comment</em>
As in the case here, you will often run across graphs that don't have markings on every grid line You are expected to be able to figure out the value of a grid line based on the spacing of the marked lines. 
It is a good idea to get familiar with reading coordinates of a point on a graph, as you will be doing it a lot.
 
        
             
        
        
        
Domain: 

Range:

Asymptote @ y = -1
Red line in picture is the asymptote.