exam Maths Puzzle Numerical Ability

How do I graph the following rational function:
f(x)= 1/x^2+4

Thank you for your help.

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exam Other Question

L = {x I x is a letter in the keyword lovely} For $125 Zhian bought h hot dogs to sell at the football game. He sold all but 11 of them for $0.25 more per hot dog than he paid. In terms of h, write a formula for a, the amount