In the real world, functions are mathematical representations of input-output situations. Example: Weekly salary is a function of the hourly pay rate and the number of hours worked.

Provide a unique example of a function and evaluate the function for a specific input.

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Step-by-step explanation:

Given a utility function U(q) = -q²-4q+2 in this case, depending on demand (q), this is function because it is a relationship or correspondence between two magnitudes, so that each value of the first corresponds to a single value of the second (or none); for example to q=-2 U(q) = 6, this means that for a demand (-2) the utility will be maximum (6) , and to -∞<q<(-4-√24)/2 ∧  (-4+√24)/2<q<∞ the utility will be negative;  (-4-√24)/2<q< (-4+√24)/2 the utility will be positive and q=(-4-√24)/2 ∧ q= (-4+√24)/2 there will be no utility

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.