Scarlett has x dimes and y quarters, having no less than 16 coins worth at most $3 combined. At most 22 of the coins are dimes and no more than 4 of
the coins are quarters. Solve this system of inequalities graphically and
determine one possible solution.

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.