Answer:
The answer to your question is: 16x + 3
Step-by-step explanation:
Step 1 :      f(x) = 8x² + 3x
                 f(x +h) =  8(x + h)² + 3( x + h)
                 f(x + h) = 8( x² + 2xh + h²) + 3( x + h)
                 f (x + h) = 8x² + 16xh + 8h² + 3x + 3h
Step 2 f(x+h) - f(x) =  8x² + 16xh + 8h² + 3x + 3h - ( 8x² + 3x)
                               = 8x² + 16xh + 8h² + 3x + 3h - 8x² -3x
                               = 16xh + 8h² + 3 h 
Step 3 f(x + h) - f(x)/ h = h(16x + 8h + 3) /h
                                     = 16x + 8h + 3
Step 4 lim  f(x + h) - f(x)/ h = lim 16x + 8h + 3  = lim 16x + 8(0) + 3 = 16x + 3
         h ⇒0                           h ⇒0                     h ⇒0
 
        
             
        
        
        
Answer:
x=5/2
Step-by-step explanation:
Calculate, rewrite, remove the paretheses 
Collect the like terms 
Swap sides 75=30x swap to 30x=75
Then divide both sides
 
        
             
        
        
        
Answer:
Length: 15 feet Width: 105 feet
Step-by-step explanation:
set up a proportion of x over 4 and x over 12 fill in the length or width that you do know. Then cross multiply and solve the simple equation you get: for example) 60 = 4x. Just divide both sides by 4 to get x by itself.
Hope this answered your question!
 
        
             
        
        
        
1.59, 1.95, 9.15, 9.5, 15.9
        
             
        
        
        
Answer:
wedf
Step-by-step explanation:
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