Problem $4$

A construction company is planning their projects for the year $2023.$ The company is considering the construction of $18$ buildings, each is $2,900m^2.$ In $2018,$ they have built similar buildings but with smaller areas, and the material costs associated with those buildings are shown in the following table:

$\backslash$table$[[$Building #$,$Area $(m^2),$Cost $($$$)$