How long will it take for a sum of $800 attracting simple interest to become $830 if the rate is 9%? compute the return on this investment.

5 months

ROI = 3.75 %

Step-by-step explanation:

Since,

The simple interest formula,

Where,

P = Principal amount,

r = rate per period ( in decimal )

t = number of periods,

Here, P = 800, r = 9% = 0.09,

If A is the future amount,

We have, A = 830

I = A - P = 830 - 800 = 30

By substituting the values in the above formula,

Hence, it will take 5 months.  ( 1 year = 12 months )

Now,

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice