Answer:
The answer is B.
Step-by-step explanation:
Graph it on Desmos.
<h2><u><em>
PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>
 
        
             
        
        
        
What is csc in the first one?
 
        
             
        
        
        
First, let's find the slope.
Slope = (7 - (-3)) / (2 - 0) = (7 + 3) / 2 = 10 / 2 = 5
So far our equation looks like: y = 5x + b
Leta plug one of the points into our equation to find b.
-3 = 5(0) + b
Simplify. 
-3 = b
The equation is: y = 5x - 3
Answer choice B is correct.
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
So we have the formula: 

And we want to solve it for r. 
So, let's first divide both sides by π and h. This will cancel out the right side: 

Now, take the square root of both sides: 

And we're done!
Our answer is B. 
I hope this helps!