Answer :
G(50)=62.5
what you do is obviously put 50 in for t then do G(50)=4/5
G(50)= 1.25x50
G(50)= 62.5
what you do is obviously put 50 in for t then do G(50)=4/5
G(50)= 1.25x50
G(50)= 62.5