Y can be rounded up to 1.51 from a minimum value of 1.505
This is the lower bound.
y can be rounded down to 1.51 from a maximum value of 1.515
this is the upper bound.
y is between the lower bound and the upper bound so y is between 1.505 and 1.515
This is shown as 1.595<=y<1.515
<= is the typed out version of (greater than/equal to) which is < with a line under it.
Irrational because square root of 15 is irrational
Square both sides to get the binomial out of the square root:
(√(2x + 8))² = (2)²
2x + 8 = 4
2x = 4 - 8
2x = - 4
Divide both sides by 2 to isolate the variable X:
x = - 4 / 2
x = - 2
Your answer is option C.
