Sara is planning on fully renovating her kitchen. She figures that this will cost a total of $25,750. If Sandra already has $21,400 saved up, what annual interest rate compounded semiannually would Sara need to earn in order to have the required
funds if she invests her money for 2.5 years?

She needs an annual interest rate of 7.54%.

Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

She figures that this will cost a total of $25,750.

This means that .

Sandra already has $21,400 saved up

This means that .

Semianually compunding, 2.5 years.

This means that

What interest rate?

We have to find r. So

0.0754*100% = 7.54%

She needs an annual interest rate of 7.54%.

4444444444444 i think

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363