investments historically have doubled every 9 years. If you start will a $2,000 investment, how much money would you have after
1 answer:
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Answer:
see explanation
Step-by-step explanation:
Given
f(x) = 2x + 1
(a)
To evaluate f(2) substitute x = 2 into f(x), that is
f(2) = 2(2) + 1 = 4 + 1 = 5
(b)
let y = f(x) and rearrange making x the subject
y = 2x + 1 ( subtract 1 from both sides )
y - 1 = 2x ( divide both sides by 2 )
= x
change y back into terms of x and x = (x) , thus
(x ) =
(c)
To evaluate the inverse function substitute x = 7, that is
(7) =
=
= 3