exam Maths Puzzle Numerical Ability

from my graph I am to predict the y value for an x value of -2. I am not sure what to do.

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exam Other Question

A coin was flipped 60 times and came up heads 38 times. (a) at the .10 level of significance, is the coin biased toward heads Show your decision rule and calculations. (b) Calculat Please help me solve this equation:Add and simplify your answer
(6+5x+6x^2+8x^3)+ (3-5x+6x^2-8x^3)