Question

2. Four towns share a common water source. By buying open land along the watershed

(area from which the water flows) they can preserve its purity from sewage, road runoff,
etc. The land demand schedule for each town based on water treatment costs saved can
be expressed as:
P = $34,000 – 10 Q
where Q, is acres purchased, and P is the price per acre that the town would be willing to pay.
a) If the cost of land is $30,000 per acre, how much land will be purchased if each town
operates independently?​

Answer 1

400=Q

Explanation:

Replace P with 30,000 -> 30,000=34,000-10Q

Then Subtract 34,000 from both sides -> 30,000-34,000=34,000-34,000-10Q

-4,000= -10Q

Finally divide by negative 10 (-10) -> -4,000/-10=-10q/-10

That gets you to 400=Q