Answer:

Step-by-step explanation:
Temperature in the room 
Decrease in the temperature(outdoors)
in
.
Rate of decrease

(a) After

But it is not possible as outdoor temperature is
so after
temperature decrease will not occur.
Hence after
more minutes temperature=
(b) Let after
temperature is 
Here 

Answer:
a. x/3.
Step-by-step explanation:
You divide to find a quotient so it is x / 3.
Answer:
33 1/3 lb
Step-by-step explanation:
When the distance between them goes from 8 ft to 12 ft, it is 1.5 times what it was. Then the force will be multiplied by the inverse of the square of this:
(75 lb)×1/(1.5²) = 75/2.25 lb = 33 1/3 lb
At 12 feet apart, the attraction force is 33 1/3 pounds.
The answer is D the last one