One day at 3: 00 a. m., the temperature was -13 degrees f in kodiak, alaska. at 10: 00 a. m., the temperature was 22 degrees f. whta was the average change in temperature per hour?

The area of a 25-inch tv screen is 300 square inches. the area of a 40-inch tv screen is 768 square inches. the are of the smaller screen is what percent of the area of the larger screen?

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2