Price of an item has been reduced by 60% the original price was $20 what is the price of the item now

The mathematical expression 9€ t means

Which strategy is used by public health to reduce the incidence of food poisoning?

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.