Step-by-step explanation:
it say the answer is 4 but I don't know how
 
        
             
        
        
        
Answer:
0.16%
Step-by-step explanation:
From the statement of the question;
Number of Laryngeal cancer due to smoking = 160
Population of smokers = 100,000
Hence the percentage of smokers liable to have Laryngeal cancer = 160/100000 ×100/1
=0.16%
Hence 0.16% of smokers are liable to Laryngeal cancer 
 
        
             
        
        
        
The standard form:

The point-slope form:

m - slope
(x₁, y₁) - point
The formula of a slope:

We have the points (2, -3) and (4, 2). Substitute:


 <em>use distributive property</em>
       <em>use distributive property</em>
 <em>multiply both sides by 2</em>
            <em>multiply both sides by 2</em>
 <em>subtract 6 from both sides</em>
                     <em>subtract 6 from both sides</em>
 <em>subtract 5x from both sides</em>
         <em>subtract 5x from both sides</em>
 <em>change the signs</em>
          <em>change the signs</em>
