g(x) = 2x+1/5
Substitute -2 for x.
g(-2) = 2*-2 + 1/5
g(-2) = -4 + 1/5
g(-2) = (-3 4/5) (mixed number)
To find g(f(x)), substitute f(x) for x in g.
g(f(x)) = g(x+4)
g(x+4) = 2(x+4) + 1/5
g(x+4) = 2x + 8 + 1/5
g(x+4) = 2x + (8 1/5) (mixed number)
To find inverse functions, switch the y and x.
convert g(x) = 2x+1/5 to y = 2x+1/5
Now switch y and x.
x = 2y+1/5
solve for y
x-1/5 = 2y
x/2 - 1/10 = y
g'1(x) = x/2 - 1/10
for the #1 how do u got -3 4/5 if u check good u got -3/5
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