Answer: 113.1 cm^2
Step-by-step explanation: The formula to find the area of a circle is 3.14r^2. R stands for radius which is 6 in this case so just plug that in for R. 3.14(6)^2=113.1
 
        
             
        
        
        
Answer:
z = (-b + 17)/(a+4)
Step-by-step explanation:
If in terms of a and b, then
az - 17 = -4z - b
z(a-4) = -b+17
z = (-b + 17)/(a+4)
 
        
             
        
        
        
Answer:
f(7) = - 25
Step-by-step explanation:
To evaluate f(7) substitute x = 7 into f(x), that is
f(7) = - 5(7) + 10 = - 35 + 10 = - 25
 
        
             
        
        
        
Answer:
The average rate of change is -3. 
Step-by-step explanation:
We are given the function: 

And we want to find the average rate of change from <em>x </em>= 0 to <em>x </em>= 3. 
In other words, we will compute the function at the two endpoints, and then find the slope of the line that crosses the two points.
For our first endpoint at <em>x</em> = 0, our function evaluates to: 

So, our first point is (0, 9). 
For our second endpoint at <em>x</em> = 3, our function evaluates to : 

So, our second point is (3, 0). 
Then by the slope formula, our average rate of change will be: 
