exam Maths Puzzle Numerical Ability

Graph the inequality and shade in the correct area of the graph:
x + 3y >or equal to -2

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Find the distance between (4, 0) and (–9, 0).
problem # 1

Use algebra to find the domain of the following function:

f(x)= 2x-1 / 9-x^2

# 2

Give a mathematical expression for the diameter (d) of a circle as a func