Two trains leave stations 25 miles apart at the same time heading toward one another on parallel tracks. Train A is traveling 40 miles per hour, while Train B is going 60 miles per hour. The dispatcher wonders how long it will take them to meet each other.

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Need solving this 2nd limit problem.

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?