What was the interest rate if your balance on an investment of $555 at the end of six years is $821.40?

The interest rate is 8% simple interest.

Step-by-step explanation:

Let the investment of $555 is getting r% simple interest for 6 years to become the balance of $821.4.

So, from the equation of the simple interest we can write

⇒

⇒

⇒ r = 8%

Therefore, the interest rate is 8% simple interest. ( Answer )

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9

i belive those are the ones that are under 90 degreese.