Question

Which inequality is true when a = 5?
(a+3)^2 - 3 > a^3 ÷ 2 - 2
2a - 6a> (2-6)a

A.
Neither I nor II







B.
I and II







C.
I only







D.
II only
@Dscdago

Answer 1

When you substitute in the 5. You should get.

\[(5+3)^{2}-3>5^{3}\div2-2\] After solving you should get, 61>60.5.
So I is true.

For\[2(5)-6(5)>(2-6)5\] the solution is -20>-20. Which is false, since -20 is not greater than -20. To be true, -20 equals -20.
So II is false.

This makes the answer to be C. Only I is true.