Answer:
Step-by-step explanation:
 
        
             
        
        
        
Be sure to include the "=" sign:   <span>f(x) = 2^x -7 
To find the x-intercepts, set f(x) = 0 and solve for x:  2^x - 7 = 0,
or
2^x = 7
Take the common log of both sides:  x log 2 = log 7
                              log 7
Solve for x:     x = --------- = 2.81 (approx)
                               log 2
</span>
        
             
        
        
        
You can multiply 16<span> by 3 (the only prime factor of </span>24<span> not shared by </span>16), to find the LCM<span>: 3 * </span>16<span> = 48</span>
-- So 48 is the answer
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
4)  C looks pretty good
5)  D looks great  
:)   ask if you'd like to know how I figured that out 
 
        
             
        
        
        
You would need to find the length of one wall then multiply it by 2 (since there are 2 walls) and then find the width and also multiply that by 2 and you would then add your to products (answers) to get the total length of your border