exam Maths Puzzle Numerical Ability

I need help to perform the indicated operation

f(x)=x+2 g(x)=x2 -1

I need to find (g of)(x)

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exam Other Question

Quadrilateral WXYZ has vertices W(3,3), X(-4,2), Y(-3,-4), and Z(4,-3)

a) Vertify that quadrilaterl WXYZ is a parallelogram
b) Vetify that the diagonals of the parallelogram bi
I am having trouble. Can someone please help?
f(x)=4x-3
f(-1)

Thank you.