exam Maths Puzzle Numerical Ability

How do you sketch the graph of the following function
f(x+1)

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exam Other Question

Please help me solve this extensded word problem:
Two of Cassandra's friends have come over. In how many different ways can the three girls wear the seven skirts? I am having some problems with these problems

Subtract express your answer in simplist form 2/5-y/y-2

and Add. Express your answer in simplist form x-13/x^2-x-12+3x-3/x^2-x-