The weather report says that if the temperature drops 10°, it will reach 25° below zero. The current temperature T can be found by solving the equation T – 10 = –25. Which answer describes the correct method for solving the equation? Please help me out with this one question I’m not good with math problems

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?