book Maths Puzzle Numerical Ability

what is are the coordinates of the vertex for y=-xsquared-4

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book Other Question

Use this equation to solve the following:

A = C multiplied by 2 with an exponent of -t/T




How much of 75 grams of carbon- 14 will remain after 2000 years?
find the real solutions

3(1-y)^2+5(1-y)+2=0