- I think it's possibly this "The figure must be a square because the diagonals of a square bisect the right angles." but there's also "The figure must be a rhombus because it has exactly 2 pairs of congruent angles." buuut since the first one seems more better i'm assuming then that's probably the right answer.
 
        
             
        
        
        
Answer: 2 inches, 3 inches, or 3.125 and 2.083
Explanations: 
The simplest way is to take 20% of the 2.5 inches and go that much above & below 2.5 inches.
2.5 x 20% = 2.5 x 0.20 = 0.5
So 2.5 - 0.5 = 2 inches was predicted
And 2.5 + 0.5 = 3 inches was predicted.
The more complicated way is to see number + 20% of that number = 2.5, and what number - 20% = 2.5.
Which solution sounds more like what you’re doing in class right now? 
If it’s the more complicated way:
0.8x = 2.5 (80% of the predicted rain value equals 2.5)
x = 3.125 inches was predicted
1.2x = 2.5 (120% of the predicted rain value equals 2.5)
x = 2.083 inches was predicted
Sorry, this is probably confusing. Let me know what questions you have.
        
             
        
        
        
Answer:
See below. 
Step-by-step explanation:
So we started off with the equation: 

And we subtracted x from both sides to acquire: 

Now, this is essentially slope-intercept form. Recall that the slope-intercept form is: 

Where m is the slope and b is the y-intercept. 
If we rearrange our equation: 

And put some parentheses: 

We can see that this is indeed slope-intercept form. 
And we can see that m is -1 and b is 2. 
In other words, the slope is -1 and the y-intercept is 2. 
 
        
                    
             
        
        
        
(57/19)*65=195
is the answer.