Answer:
3
Step-by-step explanation:
 f(3) = 2*3 -3
 = 6-3=3
f(f(3)) = f(3)
so again, 
 f(3) = 2*3 -3
 = 6-3= 3
 
        
             
        
        
        
Answer:
x = 0, 1, -4
Step-by-step explanation:
You can look at the graph where the equation intersects the x-axis. 
 
        
                    
             
        
        
        
Converse (switch p and q)
If an angle is obtuse, then it measures 128°
This is false (a 127° angle is obtuse, but it does not measure 128°)
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Inverse (negations of p and q)
If an angle does not measure 128°, then it is not obtuse
This is false (a 127° angle does not measure 128°, but it is obtuse)
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Contrapositive (negations of p and q, then switch their places)
If an angle is not obtuse, it does not measure 128°
This is true (any 128° is obtuse; no exceptions)
        
             
        
        
        
Answer:
0.23$
Step-by-step explanation:
16 ounce box of cereal is priced at =3.68$
∴1 ounce box of cereal is priced at=(3.68/16)$
                                                          =0.23$
 
        
             
        
        
        
Answer:
Expression: 2.89+(1.28x3) Answer: 6.73
Step-by-step explanation:
Number 1