One serving of this cereal provide you with 160 milligrams of sodium. this is 7% of your body daily needs.how many milligrams of sodium equal 100%?

160mg = 7%
100% - 7% = 93%

increase 160mg by 93%.

160 x 1.93 = 308.8mg

Interest gained for a particular period equals to Money invested (kept) in Savings account for that period multiplied by Interest accrued on this money.

Therefore, Accrued interest i(x) = h(x) * s(x) = 200 * [ (1.05)x - 1 ],
where x is the number of years for which money is invested.

So, new function i(x) = (210)x - 200 .