Calculate the amount of interest earned on a $12,500 deposit into an account for 3.5 years with a 2% interest rate. Use I=Prt

Here are the answers to the ones that i could see.

It would be 18 cm

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.