Answer:
8-4(-x+5)
8 +4x -20
4x -12
Step-by-step explanation:
8-4(-x+5)
8 +4x -20
4x -12
Problem:
The initial temperature of a room is equal to 10 degrees Celsius. The temperature of the room decreases by 3 degrees per day. Find the temperature of the room in 5 days.
Solution:
The temperature of the room in five days is given by the expression:
Resolving the expression we have:
Therefore, the temperature of the room for day number 5 is equal to -5 degrees Celsius.