Please help if Yk the answer.

Answer - B

60 + 4x + 20 = 180

4x = 100

x = 25

180 - 60 = 120

Line the mark up so you will find your answer

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.