Calculate the value of each function: f(x)=14x^2+15x–11 and g(x)=10x+11. Find g(f(9)).

Question

(-_-)>▄︻̷̿┻̿═━一 ^(O_O)^

Answer 1

Hi Karen.

 

If you work this from the inside out, first find f(9):  f(9)=14(9²) + 15(9) - 11

 

So f(9) = 1,258

 

 

Now replace the f(9) in the inner parentheses with 1,258

 

g(1258) <--  now use g(x) and plug in 1,258 for every x.

 

g(1,258) = 10(1,258) + 11 = 12,569

 

So g(f(9)) = 12,569