How many leaf are longest

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?