The temperature at 6:00 a.m. was ‐3.5°C. From 6:00 to 7:00, the temperature increased 2.5°C. From 7:00 to 8:00, it decreased by 0.25°C, and from 8:00 to 11:00, the temperature dropped 3.25°C. Which expression shows the temperature in °C at 11:00 a.m.?

No expressions given.

potato

To find the temperature at 11:00 a.m., we can start with the initial temperature at 6:00 a.m. and apply the changes step by step.

First, the temperature increases by 2.5°C from 6:00 to 7:00 a.m. This can be represented as +2.5.

Next, from 7:00 to 8:00 a.m., the temperature decreases by 0.25°C. This can be represented as -0.25.

Finally, from 8:00 to 11:00 a.m., the temperature drops by 3.25°C. This can be represented as -3.25.

To find the temperature at 11:00 a.m., we need to add up all these changes to the initial temperature of -3.5°C.

Starting temperature: -3.5°C
Change from 6:00 to 7:00 a.m.: +2.5°C
Change from 7:00 to 8:00 a.m.: -0.25°C
Change from 8:00 to 11:00 a.m.: -3.25°C

Adding these changes, we get:

-3.5 + 2.5 - 0.25 - 3.25

Simplifying this expression, we get:

-4.5

Therefore, the temperature at 11:00 a.m. is -4.5°C.