Question

You have the following demand equation for a pack of cigarettes: D(p)=500−20p

Where D is the demand, and p is the price. If p = 10, what is the corresponding demand?

a) 300
b) 400
c) 500
d) 600

Answer 1

When the price p is 10, substituting this value into the demand equation D(p) = 500 - 20p gives D(10) = 300. Thus, the corresponding demand for a pack of cigarettes is 300.

Step-by-step explanation:

When the price p is 10, you can calculate the corresponding demand by substituting this value into the demand equation D(p). The demand equation given is D(p) = 500 - 20p. So, if p = 10, the demand would be:

D(10) = 500 - 20(10) = 500 - 200 = 300.

Therefore, the corresponding demand when the price is 10 would be 300 packs of cigarettes, which means the correct answer is (a) 300.