Question

Given the function f(x) = 5(x+4) − 6, solve for the inverse function when x = 19.
SOMEONE HELP ME I KEEP GETTING 109 and that's not an answer .

Answer 1

solve
\[5(x+4)-6=19\]

Answer 2

add 6 to get
\[5(x+4)=25\] divide by 5 and get
\[x+4=5\]

Answer 3

but if x = 19 wouldn't you substitute both and get
19= 5(19+4)-6

Answer 4

I got 109