ok thank you for that. I am new to this. the question is( Find the rate at which demand changes (with respect to time) if the price increases at a rate of $/1.20 per year. bottles/year
The annual demand q for bottles of wine from a vineyard when the bottles are priced at p dollars each satisfies the equation
qe0.03p = 4000.
The price is currently \$12 per bottle. Find the rate at which demand changes (with respect to time) if the price increases at a rate of \$1.20 per year.