$.$ The data is provided in the attached spreadsheet. Complete problems $3\mathrm{.}1$ and $3,2$

$1.$ The following shows the number of pints of type O blood used at BPH for the past $7$ weeks:

Week Pints Used

January $31460$

February $7495$

February $14500$

February $21490$

February $28470$

March $7464$

March $14480$

Forecast the demand for the week of March $21$ using exponential smoothing with a forecast of $450$ pints for the week of January $31$ and $\backslash$alpha $=0\mathrm{.}6.$