Answer:
(x) = 
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = 2x + 1 ( subtract 1 from both sides )
y - 1 = 2 ( divide both sides by 2 )
= x
Change y back into terms of x and let x =
(x), thus
(x ) = 
Answer:
ok
Step-by-step explanation:
Answer:
£5.41
Step-by-step explanation:
7.25/1.34 = 5.41044...
Round = 5.41