<span>No simple interest, only compound interest.</span>
        
             
        
        
        
Since perpendicular lines have their slopes as negative reciprocals, the negative reciprocal of the given slope (3) is -1/3. Therefore the a value is -1/3.
        
             
        
        
        
Answer:
yes.
Step-by-step explanation:
write these ratios as fractions to see if they are proportional 
3/4
9/12 -------> this can be simplified by dividing by 3
        = 3/4 
therefore yes they are equivalent 
 
        
             
        
        
        
7*6*x^-8*x^3     
42x^-8+3                    (bases same powers add)
42x^-5
1/42x^5
<span>so the simplified </span>form<span> of 7x^-8*6x^3 is=1/42x^5</span>