Good afternoon,

The below problem was submitted as part of a problem for an assignment. There was a solution on the site for the answer, but they didn't explain it very clearly. Please see below.

The following are our company's annual sales ($ million) data from 2015 to 2021. Use the trend equation to forecast sales for 2025.

Year	2015	2016	2017	2018	2019	2020	2021
Sales $000,000	16	17	25	28	32	43	50

Using the trend equation;

y = 5.75x - 11573

where, X is the year;

Therefore for 2025, The sales forecast will be;

y = (5.75 * 2025) - 11573

y = 70.75

Therefore the forecasted sales for 2025 will be $70,750,000

I am good with the math, I just don't understand where 5.75 came from and 11573...I can figure it out and the explanation was missing on a separate example. Any help is appreciated. Thank you for your time.

V/r,

Ryan