exam Maths Puzzle Numerical Ability

I need this asap!! I'm trying to pass this class!!!

graph log 2(2x)

graph y = log2(x)

graph y=e^x and z=e^(2x)in the same window

graph y=log2(x)and z=log2(2x)in the sam

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exam Other Question

I need help with this problem -3x < -6 or x + 5 < -2

The second symbol was supposed to be greater than equal to, I just couldn't make the symbol.
7^2-4(8-6)