Change this radical to an algebraic expression with fractional exponents.

Rational exponents

work like this: the numerator is the actual exponent of the base, while the denominator is the index of the root.

In other words, we have

So, in you case, we have

Assuming that the question contanis a typo. If you actually mean ,

then you can write it as

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google