A company estimates that it can sell 4000 4000 units each week of its product if it prices each unit at $ 25 $ 25 . However, its weekly number of sales will increase by 100 100 units for each 0.10 0.10 decrease in price. The company has fixed costs of $ 1500 $ 1500 . The cost to make each unit is $ 1.20 $ 1.20 . Find the level of production that maximizes the company's profit if the company must produce and sell between and including 3000 3000 and 16000 16000 . What is the maximum profit?

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.