Final answer:
The equation represents the demand for personal pizzas. To find the value of x that makes the equation true, set Qd equal to a given value and solve for P.
Step-by-step explanation:
The equation representing the demand for personal pizzas is: Qd = 16-2P, where Qd is the quantity demanded and P is the price of pizzas.
To find the value of x that makes the equation true, we need to set Qd equal to a given value and solve for P. For example, if we are given that Qd is equal to 10, we can plug this value into the equation and solve for P:
10 = 16-2P
Next, we can rearrange the equation to solve for P:
P = (16-10)/2 = 3
Therefore, when the quantity demanded is 10, the price of the personal pizzas would be 3.