Part 1:
3+2+1 = 6 total units
There is only 1 history book.
1/6 total.
Part 2:
6-1 (we've lost the history book) = 5 total units
3 novels. = 3/5
Part 3:
1/6 * 3/5 = 3/30 or 1/10
        
                    
             
        
        
        
Answer:
y = -1x + 3 or y = -x + 3 (**That is the last option which is D**)
Step-by-step explanation:
You need to do slope-intercept formula and the slope formula.
The Slope-Intercept Formula: y=mx+b
The Slope Formula: y2 - y1 / x2-x1
Your coordinates:
(-1,4) and (1,2)
2 - 4/1- (-1) 
-2/2 
Simplified is -1
Your "m" in the slope-intercept formula is -1
Formula: y=-1x + b
Now, you need to find the Y-Intercept which is the "b" 
Using our slope-intercept formula, you need to plug in "x1" and "y1"
4 = -1(-1) + b 
4 = 1 +b 
4-1 = b 
3 = b 
So your equation is:
y = -1x + 3 or y = -x + 3 
 
        
             
        
        
        
Answer:
I think the answer is b
Step-by-step explanation:
Because Mark has a better probability of getting at least  something
 
        
                    
             
        
        
        
Answer:
through radiation
Step-by-step explanation:
the suns rays hit earth and then cause heat
 
        
                    
             
        
        
        
Answer:
b = 12
Step-by-step explanation:
7b = 84
We can break down 7b as 7 x b
7 x b = 84
We divide both sides by 7:
7 x b ÷ 7 = 84 ÷ 7
b = 12
-Chetan K