book Maths Puzzle Numerical Ability

Hi. I need help with the following problem please:

Which of the following polynomial functions might have this graph?

y = x^3(x - 1)^2(x - 2)
y = 2x^3(x - 1)(x - 2)^2
y = 5

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book Other Question
3(x+4)=18 and 4(x-5)+6+3x-(2x-7) so wats the answer. tell me the steps on how to get the answer too. . Solve the following system by addition. If a unique solution does not exist, state
whether the system is inconsistent or dependent.
x + 5y = 10
-2x - 10y = -20