exam Maths Puzzle Numerical Ability

I need help with my sons Algebra II, it has been many years...

Solve the inequality algebraically

x 2 -3x-4 < 0 (that is x squared)

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exam Other Question

Solve by writing an inequality. The length of a picture frame is 3 in. greater than the width. The perimeter is less than 52 in. Please help me describe the dimensions of the frame. Translate the following problems into algebraic equations :

1) 42 is 40% of what number?

2) 15 is what percent of 3?

3) The sum of the page numbers on facing pages of a book is 157; what are the page numbers?