$2\mathrm{.}1$ Use an IF function in cell E$10$ to calculate the price to charge per donut for order $1.$

a$.$ Customer are charged $$\mathrm{.}50$ per donut unless they buy a dozen or more. In this case, they are charged $$\mathrm{.}40$ a donut.

b$.$ Refer to the appropriate price in cells C$3$ and $($C$4)$ for your "value$\_$if$\_$true" and "value$\_$if$\_$false" arguments.

c$.$ Use absolute and relative references when appropriate.