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 and i will give you 100 points plz

-4 4/5 deg F

Step-by-step explanation:

3 pm: 5 1/5 deg

2 1/2 deg per hour for 4 hours = 2 1/2 deg * 4 = 10 deg

7 pm: 5 1/5 deg - 10 deg = -4 4/5 deg

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

step-by-step explanation: