Sales (in thousands) of the new product over the six-week period since its introduction have been as follows: Week
Sales
1
10
2
12
3
14
4
18
5
16
6
20
a. Develop a three-week moving average for this time series!
b. Compute MSE and forcast for week 7!
c. Using trend projection. What type of pattern exists in the data?
d. Using trend projection. What are the forecast sales for period 10?

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c