exam Maths Puzzle Numerical Ability

How do u gragh the function: y=-x2+1 It is suppost to be y=x(squared)+1

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exam Other Question

Please show me how to work this problem step by step

3 0ver 4 - x =2x
I am so confused on these problems could someone help me understand what i am suppose to be doing? I am to solve the following inequalities for x

{{{X+4>7}}}

{{{3x<1112}}}