The value of r varies directly with s. If r= -1/2 when S=5 which direct variation equation represents this relationship. (I NEED ASAP PLEASE)

How do the graphs of y = 1/x and y=5/x+6 compare?

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Solve the inequality and graph 6j - 7 < 5