ILL MARK YOU BRAINLIEST IF YOU ANSWER IT Question 4 (Essay Worth 10 points) (01.05 MC)The temperature of a city changed by -20 degrees Celsius over a 4 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 (5 points) Part B: Simplify the expression and explain, using words, what your answer means (5 points)​