Given that f (x)=2 x−4 and g ( x)=3 x+5 Find: gf (3) With noob like steps please? i need a really clear working to fully understand. THANKS! <3

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Answer 1 · 2018-05-04T13:27:28

I tried this:

Have a look:

enter image source here

Hope it helps!

Answer 2 · 2018-05-04T13:30:08

#gf(x)=11#

#f(x)=2x-4 and g(x)=3x+5#

To find #gf(3)# means to put the value of #x=3# into #f(x)# and then put the result into #g(x)#

#f(x)=2x-4# when #x=3 => f(3)=2xx3-4=2#

So #f(3)=2# now put #x=2# into #g(x)#

#g(2)=3xx2+5=11#