exam Maths Puzzle Numerical Ability

Quadratic functions
Find the maximum(or munimun) of each function, also determine the x-intercepts of each function (if any). express your final answers as decimal number (rounded

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exam Other Question

A concrete mix is in volume proportions of 1 part cement, 2 parts water, 2 parts aggregate, and 3 parts sand. How many cubic feet of each ingredient are needed to make 54 cu ft of concrete? I have been mutiplying bionomials but, this one has three monomials multiplied together, how do I proceed. (2y+1)(y+z)(3y-1)