exam Maths Puzzle Numerical Ability

Solve the inequalities

|2x + 3| + 6 > 0

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exam Other Question

A ball is thrown upward from the roof of a building 100 m tall with an initial velocity of 20 m/s. Use this information for exercises 35 to 38.



When will the ball reach a height of 80 m?
Factor Completely:

5a^2 - 125

I can not seem to think of how to do this problem with two numbers, can anyone help me out? Thank you