Not sure but you can figure it out.
Any number raised to the power of 0 is 1.
Therefore, 15^0 = 1
Rationalizing the denominator, simply means "getting rid of that pesky root at the bottom", and we do so by simply multiplying it by something to take it out, of course, we multiply the bottom, we have to also multiply the top,

Answer:
Y/6 <_ 2
Step-by-step explanation:
(Less than it equal to sign)
X-3 is the expression that shows it