Question

Given the function f(x) = −2x + 8, find x if f(x) = 22.

Answer 1

we have
\[f(x)=-2x+8\]
f(x)=22
\[22=-2x+8\]
find x from here, can you do this?

Answer 2

i got -19

Answer 3

\[22=-2x+8\]
\[22-8=-2x\]
\[14=-2x\]
so
\[x=?\]

Answer 4

i though you did multiplication first?

Answer 5

where did I do?

Answer 6

I think you did
\[-2(x+8)\]
but it's
\[-(2x)+8\]
so
\[22=-2x+8
\]

Answer 7

you did subtraction. But now i believe that was right

Answer 8

yeah:)
do you follow @vetdoc ?

Answer 9

yes... :P i get it now

Answer 10

great:D