Suppose that a phone that originally sold for $800 loses 3/5 of it's value each year it was released. write an equation for the value of the phone, p,t, Year's after it is released

hint:growth factor

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?