exam Maths Puzzle Numerical Ability

graph all on a graph;
f(x)=log3x+2
f(x)=log3(x+2)
f(x)=log3(x-2)
f(x)=log3x

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exam Other Question

A tree diagram shows the possibilites for boys and girls in a two-child family. If a family has 2 children, what are the chances that one child is a girl and one child is a boy?

A 1/4
B 1/3
C 1/2
D 3/4 How do you plot x+2>6 on a number line? I am not sure how to solve this problem.