book Maths Puzzle Numerical Ability

The table below shows the comparasion of the cost, in dollars, of a $100,000 life insurance policy for female nonsmokers at certain ages

Age, a Cost, C
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book Other Question

If f(x) = x(x – 1)(x – 4)^2, use interval notation to give all values of x
where f(x) > 0.
hi!! I need to do wordproblems with all of the arithmetic properties. PLEASE HELP i dont know a THING i dont want to fail math again