In its expanded form, a number includes three powers of 10 and a 5 that is worth a lot. What might the number be? hep

Google it that might work

It is 5.8 you add all of the up to equat 180 then solve the equation

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.