Starting at 1.00 pm, the temperature changes -4 degrees per hour. How long will it take to reach -1 degree?

What is the beginning temperature?

It is 35 degree. I forgot to put it up. We are supposed to write an equation.

To find out how long it will take to reach -1 degree, we need to determine the rate at which the temperature changes and calculate the time it will take for the temperature to decrease from its starting point of 0 degrees to -1 degree.

Given that the temperature changes -4 degrees per hour, we know that the temperature will decrease by 4 degrees every hour.

To find out how many hours it will take to reach -1 degree, we'll set up an equation:

-4 degrees per hour * x hours = -1 degree

Simplifying this equation, we get:

-4x = -1

Now, we can solve for x by dividing both sides of the equation by -4:

x = -1 / -4
x = 1/4

Therefore, it will take 1/4 of an hour to reach -1 degree. Since there are 60 minutes in an hour, 1/4 of an hour is equal to 15 minutes.

So, it will take 15 minutes for the temperature to reach -1 degree, starting from 1.00 pm.