book Maths Puzzle Numerical Ability

Hello
what would the formula look like for: y as a funtion of x and what would the graph look like
Thank you for your help

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book Other Question

the value in cents of 5 quaters I really need help on this one. I need to find the derivative of this equation: f(x)= x to the 4 minus x to the sixth plus cos(2x). Would you please help