It’s really blurry, I can’t help :(
        
             
        
        
        
For the function y = 7x - 1, if you state that the domain(or all the numbers you can substitute in for "x") of that function is the set of all real numbers, then you can assume that there will be an infinite number of solutions for the function.
In other words, if you substitute any real number in for "x" you will find that you will get a corresponding value for "y".  In fact, these "pairs" of corresponding values of x and y are called ordered pairs and represent the various solutions of the equation.  
Your response should be choice D:  
        
             
        
        
        
Answer:
the base is 6 inches, the height is 4.5 inches. Multiply that by usinhg the formula A = bh your answer will be 27 then multiply that by 60 and your answer is 1,620.
Step-by-step explanation:
 
        
                    
             
        
        
        
The correct answer is option D
The solution is shown below:
 
  
        
             
        
        
        
Answer:
The height of tree house is 70.71 feet
Step-by-step explanation:
We are given that A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground
Refer the attached figure 
Length of rope AC = Hypotenuse =100 feet
The top of a tree house to the ground forms a 45∘ angle of elevation from the ground = 
 
We are supposed to find the height of tree house i.e.AB = Perpendicular
So, Using trigonometric ratio 

Hence The height of tree house is 70.71 feet