4.
h(f(x)=h(2x-1)=
(2x-1)^2+1=
4x²-4x+1+1=
4x²-4x+2
5. 
f(f(x))=2(2x-1)-1=4x-2-1=4x-3
6.
f o g (x)=f(g(x))
h o g (x)=h(g(x))=
(3x)^2+1=
9x²+1
        
             
        
        
        
It’s 20% because 10/10 would be 100% and 1/10 would be 10%
        
             
        
        
        
Answer: The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept. 
Step-by-step explanation:
 
        
             
        
        
        
If you look through the chart, you'll see that in each column, 
the amount of money donated is 1/5 the number of lunch 
specials sold.
The equation is: 
Donation amount = (1/5) · (lunch specials sold) .
The constant of proportionality in money per lunch special sold 
is $1/5 or 20 cents.
        
             
        
        
        
Answer:
it will take 25 hours
Step-by-step explanation: add 10 and 15