math (reiny) got an ans but would like work it pl
posted by Maxine on .
Given that g(x)= 2x+1/5 and f(x)=x+4
Calculate the value of g(2)
2(2)+1/5= 3/5
Is this right??
How do i write an expression for gf(x) in the simpliest form??
And how do i find inverse functions such as g`1(x)?

No. 4+1/5= 3 4/5=3.8 or 19/5
Unless g(x)=(2x+1)/5 which in case then you would be right. 
I noticed that Marth already gave you an answer correctly following the order of operation the way you typed it.
You followed the same order in finding g(2) but made an arithmetic error.
g(2) = 2(2) + 1/5
= 4 + 1/5
= 19/5
Perhaps you meant
g(x) = (2x+1)/5
If so, follow Marth's steps using the corrected function for both g(f(x)) and the inverse of g(x)