book Maths Puzzle Numerical Ability

log1(x+1)=log4(x-3)

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book Other Question

The sum of three consecutive odd integers is -273. What are the integers? What does the graph look like for y=ax^2 + bx, if a<>0, b <>).....

Does it just make a parabola over the Y axis pointing up, starting above 0,0. Not touching the x-axis at all