Question

The temperature of a city changed by −15 degrees Celsius over a 5-week period. The temperature changed by the same amount each week.

Part A: Write an expression to show the average change in the temperature of the city each week.

Part B: Simplify the expression and explain, using words, what your answer means.

Answer 1

@Michele_Laino @texaschic101

Answer 2

here, by definition, the average change is:
\[\frac{{\Delta \theta }}{{\Delta t}} = \frac{{ - 15}}{5} = ...?\]

Answer 3

correct!

Answer 4

yes!

Answer 5

the meaning of your answer is given by the subsequent statement:
"we can suppose an average change of temperature about -3 degrees for each week"

Answer 6

so i write ^ @Michele_Laino

Answer 7

the simplification is:
\[\frac{{ - 15}}{5} = - 3\]