Suppose a local $?$ ?McDonald's hamburger restaurant raises the price of its cheeseburgers from $?$ ?$ $2\mathrm{.}00$ ?to $?$ ?$ $2\mathrm{.}50.$ ?What will happen to the quantity of $?$ ?McDonald's cheeseburgers $?$ ?demanded?

Part $2$

If $?$ ?McDonald's raises the price of $?$ ?it's cheeseburgers, then