Question

At 3pm, the temperature outside was 5 1/5 degrees Fahrenheit. The temperature then fell steadily by 2 1/2 degrees per hour for the next four hours. What was the temperature at 7pm? Plz answer this I will give you 100 points

Answer 1

- 4 3/4 degrees Fahrenheit.

Explanation

From 3 to 7 pm is 4 hours, so

Temperature at 7 pm = 5 1/4 - 4 * 2 1/2

= 21/4 - 4 * 5/2

= 21/4 - 10

= 21/4 - 40/4

= -19/4

= - 4 3/4 degrees F