Question

hi I need help with this math problem in city A the temperature rises 9°F from 8 A.M to 10 A.M in city b the temperature drops 1°F from 8 A.M then the temperature drops 3 °F from 9 A.M to 10 A.M write an Expression that represents the change in temperature from 8 A.M to 10 A.M for each city simplify and interpret each sum. what is the change in temperature for city A ? for city A the temperature for city A,the temperature ___ °F

Answer 1

The temperature changes for each city can be represented with a positive sign for increases (+) and a negative sign for reductions (-).

The temperature was monitored from 8AM to 10AM for both cities. For city A, it was a rise of 9 degrees fahrenheit, or better expressed as +9 from 8 AM to 10 AM. This is shown as;

`\begin{gathered} T=x+9 \\ \text{Where T is the temperature as at 10, after the change} \\ \end{gathered}`

For city B, the temperature drops 1 degrees fahrenheit from 8 AM, and then drops further by another 3 degrees from 9AM to 10 AM. The total drop in temperature from 8 AM to 10AM can be shown as;

`\begin{gathered} T=x-1+(-3) \\ T=x-1-3 \\ T=x-4 \\ \text{Where T is the temperature as at 10AM after the change} \end{gathered}`

**Please note that x is the temperature as at 8AM before any changes began to occur.**