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Answer:
2x^2/3yz^7
Step-by-step explanation:
 
        
             
        
        
        
4.b.
Answer:  See below.
Step-by-step explanation:
<h2><u>
For the equation f(x) = 2x</u></h2>
3.a.  f(6) means use x = 6 in the equation f(x) = 2x
so f(6) would be f(6)= 2(6)
<u>f(6) = 12</u>
3.b.  f(-11) = 2(-11)
<u>f(-11) = -22</u>
3.c.  f(2.75) = 2(2.75)
<u>f(2.75) = 5.5</u>
3.d.  This is turned around.  We are told f(x)=20, so what would x need to be for f(x) to be 20?  Since f(x) = 2x, we can say 20 = 2x.  Therefore x = 10
f(10) = 20
<u>The rest of (3) are solved in the same fasion.h</u>
<u></u>
<h2><u>
For the equation  f(x)= 5x+50</u></h2>
4.a.  f(7) = 5(7)+50
<u>f(7) = 85</u>
4.b. f(-12)
   f(-12) = 5*(-12)+50
<u>f(-12) = -60</u>
<u></u>
Continue in the same fashion for these types of problems.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Any number equal to or greater than 20 is a solution.  22 would be a solution.
 
        
             
        
        
        
Answer:
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Step-by-step explanation: