Question

Please Help!!
f(x) = square root of x plus 7 ; g(x) = 8x -11
Find f(g(x))

Answer 1

I'm not sure if you mean (
`√(x + 7)` ) or (
`√(x) + 7` ) I solved it both ways .

`f(x) = √(x + 7) \\ \\ f( \: g(x) \: ) = √((8x - 11)+ 7) \\ = √(8x - 11 + 7) \\ = √(8x - 4) \\ = 2 √(2x - 1)`

____o_____o______

`f(x) = √(x) + 7 \\ \\ f( \: g(x) \: ) = √((8x - 11)) + 7 \\ = √(8x - 11) + 7\\`

I hope I helped you^_^