Idk i need the points and how is this for math
        
                    
             
        
        
        
Answer:
see explanation
Step-by-step explanation:
Using the rules of exponents
 ⇔
 ⇔  and
 and  = 1
 = 1
Substitute the values of x into 
x = 0 →  = 1 ⇒ a = 1
 = 1 ⇒ a = 1
x = 2 →  =
 =  =
 =  , hence
, hence
b = 
x = 4 →  =
 =  =
 =  , hence
, hence
c = 
 
        
             
        
        
        
when someone says a number squared or cubed, or to the certain power, it means how many times you multiply the base number by itself that many times, for example
2²= 2 * 2
or 9³ = 9 x 9 x 9
a square root or cube root, is a harder to understand, but still somewhat simple, it basically means how many what number squared or cubed equals this number.
so for example the square root of 9 = 3 because 3 x 3=9
or cube roots for example ∛125= 5 because 5 x 5 x 5
So here is an example one for you. √81.
 
        
             
        
        
        
<h3>
Answer:  72 words per minute</h3>
Work Shown:
1 hour = 60 min
2 hours = 120 min (multiplied both sides by 2)
2 hours + 30 min = 120 min + 30 min = 150 min
speed = (number of words typed)/(time taken)
speed = (10800 words)/(150 min)
speed = (10800/150) words per minute
speed = 72 words per minute
 
        
        
        
Answer:
10
Step-by-step explanation:
4=2/5 8=4/5 10=5/5