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\[x \times 1.045^2 \geq 300 \implies x \geq \frac{300}{1.045^2}\]

umm so whats the answer??

Umm, umm, umm... the answer is do your own homework, kiddo.

Or read what I posted and work out the answer for yourself.

Interest rate of 4.5% => value goes up by a factor of 1.045 each year.

but that is confusing, thats not what it shows me to do on my practice stuff

Where 1.045^2 = 1.045 x 1.045

isnt it supposed to look something like ... 300 x .045 x 2 = ??

300/0.045 x 2 = ?? is that wat its supposed to be like

300/(0.045 x 0.045)

are you sure lol

I study Mathematics at the best University in the world. I am sure.

and what university is that mr.newton

Cambridge, England.

That is possibly the most embarrassingly bad maths I have done in my entire life.

wat is * ?

Just another symbol for times, x, I use them interchangeably :(

so he must invest 3259.98 to make $300 within 2 years if the interest rate was 4.5% ???

ok thank you...