Answer:
(x) = 
Step-by-step explanation:
let d(x) = y and rearrange making x the subject, that is
2x - 4 = y ( add 4 to both sides )
2x = y + 4 ( divide both sides by 2 )
x = 
Change y back into terms of x, so
(x ) = 
4 packages of hotdogs and 5 packages of rolls
7,614 ,7,361,
Hope this helped.
<span>f(x)= -2x +1 for f(3)
f(3) = -2(3) + 1 = -5
answer
</span><span>A)-5</span>