exam Maths Puzzle Numerical Ability

Q#39. (heating water)the temperature of water in a heating ea keetle rises according to the equation y=30x+72, where y is the temperature (in degrees fahrenheit)x minutes after th

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Evaluate the functions for the values of x given as 1,2,4,8, and 16. Describe the differences in the rate at which each function changes with increasing values of x. PLEASE SHOW A Find the values of each of the following plynomials of the given values of the variable:
-x^2-5x-6, x = -3 and x = -2

I am not getting this problem and a bit confused on how to solve this,and need some help. Thanks.