The number of transistors (in millions) made at a plant in Japan during the past 5 years

Question:

The number of transistors (in millions) made at a plant in Japan during the past 5 years follows:
Year Transistors
1 ............ 140
2 ............ 160
3 ............ 190
4 ............ 200
5 ............ 210
(a) Forecast the number of transistors to be made next year, using Linear regression.
(b) Compute the mean squared error (MSE) when using linear regression.
(c) Compute the mean absolute percent error (MAPE).