You are given the following monthly demand data for Apple Airpods at Verizon.

Period Demand

$11,250$

$21,594$

$31,532$

$41,423$

$51,921$

$61,958$

$72,823$

Estimate a simple linear regression line using the data from Periods $1-7.$

Forecast the demand for Period $9$ using the regression line you estimated to incorporate trend.

Rounding instructions

Carry calculations to three decimal places.

Enter your final answer rounded to one decimal place.