Science:Math Exam Resources/Courses/MATH101 C/April 2024/Question 18 (a)/Solution 1

As more of a product is available in the market, it is easier to obtain, so the price per unit that a customer is willing to spend goes down. Therefore, we should expect the demand to be non-increasing in $q$. Thus, the correct answer is G. We know that $D(q)={\frac {1}{2^{q}}}+1$ because that is the only non-increasing function out of the two options.