An airplane cuts through the morning sky. for every 1,000 feet that it climbs, the outside temperature drops 20 degrees fahrenheit. what is the rate of temperature change in degrees fahrenheit per foot?

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.