exam Maths Puzzle Numerical Ability

show that 7log(16/15)+5log(25/24)+3log(8180)=log2

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exam Other Question

I need help determining what this graph would look like. can you help?:g(x)f(x-3)-2. i understand that it will look like a U, however not sure which way it will move. Find the graph by plotting the points.

f(x)=3x-7