Preston, Incorporated, manufactures wooden shelving units for collecting and sorting mail. The company expects to produce $260$ units in July and $390$ units in August. Each unit requires $10$ feet of wood at a cost of $$1\mathrm{.}10$ per foot. Preston wants to always have $260$ feet of wood on hand in materials inventory.

$1.$Compute Preston's direct materials purchases budget for July and August. The last guy got July: $2,600,$ August: $3,900$ and it was wrong