Evaluate the function at the specified value?

Question

F(x) = Squareroot(x+8)+2 F(1)=_____ and F(x-8)_____ if u can explain it also it will help most dearly ty

Answer 1

for f(1), plug in 1 for x in the F(x) equation.  

for f(x-8), plug in x-8 for x in the f(x) eq

I'll show you the confusing one f(x-8) and you do the easy one f(1)

Sq rt((x-8)+8)+2

sq rt (x) + 2

Answer 2

you're plugging in what is in the parenthesis (1 and x-8) in for x in your first equation.  so you are looking for the answers to these two equations:

squareroot(1+8) + 2

and

squareroot(x-8)+8 +2

the first one is

squareroot(9) +2

which is 5

i'm not sure about the second one...did you type it right?  are you sure it is F(x-8)?  no typo in there?  right now the farthest you can get is squarerootx +2; its not fully solvable yet.

Answer 3

F(x) = √(x+8) + 2

F(1) = √(1+8) + 2

F(1) = √9 + 2

F(1) = 3 + 2

F(1) = 5

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F(x - 8) = √((x - 8) + 8) + 2

F(x - 8) = √x + 2

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