The temperature in Toronto at noon during a winter day measured 4°C the temperature started dropping 2° every hour which in the quality can be used to find the number of hours X after which the temperature to measure below -3°C

Do you mean "in the quality" to be "inequality"?

4-2x < -3

To find the number of hours, X, after which the temperature drops below -3°C, we can set up an equation based on the information given.

The initial temperature at noon is 4°C. The temperature drops 2°C every hour. We want to find the number of hours after which the temperature drops below -3°C.

Let's break down the problem step by step:

Step 1: Set up the equation.
Let X be the number of hours.
The equation can be written as: 4°C - 2°C*X = -3°C

Step 2: Solve the equation for X.
To solve for X, we need to isolate it on one side of the equation. Let's rearrange the equation:
4°C - 2°C*X = -3°C
Subtract 4°C from both sides: -2°C*X = -7°C
Now, divide both sides by -2°C: X = (-7°C) / (-2°C)
This simplifies to: X = 3.5 hours

Therefore, the temperature in Toronto will measure below -3°C after approximately 3.5 hours.