Question

Sales at Glover's Golf Emporium have been increasing linearly. In their third business year, sales were $155,000. This year was their eighth business year, and sales were $310,000. If sales continue to increase at this rate, predict the sales in their tenth business year.

Answer 1

Answer:

$372,000

Step-by-step explanation:

So, first I'm going to find the equation.

The basic linear equation is y=mx+b

We know there is a difference of 5 years between 155,000 and 310,000. Subtract 155,000 from 310,000 and we get 155,000.

Divide 155,000 by 5, and we get 31,000. It increases by 31,000 every year.

Now we have y=31,000x+b.

To find b we can plug stuff in. y=sales and x=year. Im going to use the third year results.

155,000=31,000(3)+b

155,000=93,000+b

-93,000   -93,000

62,000=b

Now we have our equation y=31,000x+62,000.

Plus in 10 as x to find year 10"s sales and.... we get $372,000