exam Maths Puzzle Numerical Ability

find the x intercepts

y=x^2-3x-1

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exam Other Question

How many gallons of a plant food that is 9% nitrogen must be combined with another plant food that is 25% nitrogen to make 10 gal. of a solution that is 15% nitrogen? Graphing Linear Equations. Can you help me solve this equation? 4x+4y=2