Question

5. The temperature is 8 degrees. It is expected to fall 5 degrees each hour for the next
several hours. In how many hours will the temperature be-7
degrees?

Answer 1

Answer:

3 hours

Step-by-step explanation:

      We can set up an equation and solve. Let x be hours that have passed, the answer to our question.

-7 = 8 -5x         - Created equation

-15 = -5x             - Subtract -8 from both sides

3 = x                     - Divide both sides of the equation by -5

      In 3 hours the temperature will be -7°.

Answer 2

Answer:

-7°

Step-by-step explanation:

after 1 hr temp = 3°

after 2 hrs = -2°

after 3 hrs = -7°