how do i solve: a manufacturer of calculators has determined that 10,000 calculators per week will be sold at price of $95 per calculator. At a price of $90, it is estimated that 12,000 calculators will be sold. Predict the number of calculators that will be sold at a price of $75.

Answer 1

It appears that the number of calculators sold, as a function of the amount of discount (x) is

p(x) = 10000+400x

so, just plug in x=20 for the demand at $75.