for which points is the sum of their x- and y-coordinates greater than 4 [for example, (5, 2) since 5 + 2 = 7, or (–3, 9) since –3 + 9 = 6]?
a.
e, x, z
b.
z, e
c.
x, l
d.
d, l

I think it's A! DON'T HATE ME IF ITS WRONG! i'M TRYING!

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.