tyashirley tyashirley
  • 02-03-2018
  • Mathematics
contestada

PLEASE HELP FAST!!!!!!!!!!!! WILL GIVE BRAINILST OR WHATEVER :)))))))))))

let f(x)=4x+3 and g(x)=-2+5. find (fog) (5)

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calculista
calculista calculista
  • 11-03-2018
the correct question is
let f(x)=4x+3 and g(x)=-2x+5. find (fog) (5)

we have that
f(x)=4x+3
g(x)=-2x+5
(fog) (x)---------> f(g(x))------> 4*[-2x+5]+3---------> f(g(x))=-8x+20+3
f(g(x))=-8x+23
then 
(fog) (5)=-8*5+23---------> (fog) (5)=-40+23
(fog) (5)=-17

the answer is (fog) (5)=-17


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