exam Maths Puzzle Numerical Ability

Express in simplest form by subtracting

__3 - _1____
x^2+4x+3 x^2 -9

Just double checking to see if I did it right?

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exam Other Question

3x-y<-3 Hi I am a distance education student and new to geometry. I do not know where to start. Thanks for helping.
Lee Ann

Problem: Find the volume of a right circular cylinder, if its radius is
ten and its height is five less than its radius.