+0  
 
0
31
2
avatar

Let \(f(x) = 3\sqrt{2x - 7} - 8\). Find \(f(8)\).

 

I also want to know how to do these type of problems (Let f(x) = blah blah, find f(2), that type of thing)

 May 16, 2020
 #1
avatar+111360 
+2

f(8)  means that we just sub 8 in for x  and evaluate

 

3* sqrt  [ 2(8)  - 7 ]   - 8   =

 

3* sqrt [ 16 - 7 ]   -  8

 

3* sqrt [ 9 ]  -  8

 

3 *( 3)  -  8  =

 

9  -  8   =

 

1

 

So f(8)   =  1

 

Not too tricky,huh  ????

 

cool cool cool

 May 16, 2020
 #2
avatar
+1

Nope. Thank you CPhill!

Guest May 16, 2020

23 Online Users

avatar