exam Maths Puzzle Numerical Ability

My equation is:

-t
- > -15
2

This is one of the most confusing equations 4 me.

If anyone could help me with this,I will be very thankful

Kia,14

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exam Other Question

Which property or properties of inequality allow(s) you to conclude that is 2y>y-3 ,then y>-3

Answer Choices:

A) Multiplication Property
B) Addition Property
C) Division Property
D) Addition and Division Properties A ball is thrown upward into the air with an initial velocity of 128ft/s. The equation h(t)= -16t2 + 128t. Find the maximum height that the ball will attain?