Which function represents the following graph

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

The total number of dental clinics total for the last 12 months was recorded

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?