SOLUTION: lenna is a meteorologist. On December 10, she notes that the temperature is −3°F at 6:00 A.M. She predicts that the temperature will rise at a rate of 2° per hour for 3 hr, a

Algebra ->  Expressions -> SOLUTION: lenna is a meteorologist. On December 10, she notes that the temperature is −3°F at 6:00 A.M. She predicts that the temperature will rise at a rate of 2° per hour for 3 hr, a      Log On


   

Question 436216: lenna is a meteorologist. On December 10, she notes that the temperature is −3°F at 6:00 A.M. She predicts that the temperature will rise at a rate of 2° per hour for 3 hr, and then rise at a rate of 3° per hour for 6 hr. She also predicts that the temperature will then fall at a rate of 2° per hour for 3 hr, and then fall at a rate of 5° per hour for 2 hr. What is lenna’s temperature forecast for 8:00 P.M?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Breaking it up into time intervals

6AM -3°F

9AM -3° + 2°*3 = 3°     |will rise at a rate of 2° per hour for 3 hr

3PM  3° + 3°*6 = 21°    |will rise at a rate of 3° per hour for 6 hr

6PM 21° - 2°*3 = 15°    |will fall at a rate of 2° per hour for 3 hr

8PM 15° - 5°*2 = 5°F    |will fall at a rate of 5° per hour for 2 hr