For this case we have:
By properties of the radicals 
So:
.
Now, for power properties we have:

Thus, 
So:
in its radical form
Answer:
in its simplest form.
in its radical form
Answer:
3.4
Step-by-step explanation:
2/5 as a decimal is 0.4, and we can add 3 to it, getting 3.4
Answer:
An interest rate is the amount of interest due per period, as a proportion of the amount lent, deposited or borrowed
0.059 x 100 = 5.9%
5.9% is your answer
hope this helps