Example
The supply for bananas follows the equation: `Q_s = 3 + 2P`.
If bananas are sold for $3, the quantity supplied is `Q_s = 3 + 2 \times 3 = 9` bananas.
Question
The supply equation for cookies is `Q_s = 46 + 31 \times P`.
If cookies were sold for $73, how many cookies will be produced?
Plug the price $73 into the demand function:
`Q_s = 46 + 31 \times P = 46 + 31 \times 73 = 2309`.