What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the
point (-4, -3)?

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

The weekly revenue for a company is r = 3p^2 + 60p + 1060, where p is the price of the company's product. what price will result in a revenue of $1200.

Having a hard time understanding this question (see attachment).