Steve walks from his house 8 km South then turns east and walks 2 km. Then he walks 9 km North to his older sister’s house. She gives him a ride to his friend Fred’s house 2 km West. Find his distance

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )