Question

help!! ill give medal
given f(x) = x+7/5 solve for f-1(3)

Answer 1

f(x) = x+ 7/5
To find inverse, switch places of f(x) and x
x= f(x) + 7/5
f(x) = x - (7/5)

Now plug in 3
f-1(3) = 3 - (7/5)
f-1(3) = ?

Answer 2

1.6?

Answer 3

Yes :)
8/5 = 1.6

Answer 4

the only anwser closest to that on my practice study sheet is 2

Answer 5

what are the answer choices?

Answer 6

Wait, for you intital problem is it:
\[f(x) = \frac{ x+7 }{ 5}\]
or this 2nd one:
\[f(x) = x + \frac{ 7 }{ }\]

Answer 7

x+ (7/5