Write and solve a real world problem that can be represented by the expression (-3)(5)+10

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.