A businessman from Cavite, owns 10 fast-food restaurants in 10 towns of Cavite. He wants to know if the town's population affects the monthly sales.The monthly average sales, in millions of pesos, and the town's population, in hundred thousand, is given below:

TOWN	A	B	C	D	E	F	G	H	I	J
POPULATION	3.5	7.72	8.85	9.74	6.76	4.18	6.41	8.43	9.12	6.95
SALES	1.17	1.56	1.75	1.98	1.64	1.21	1.48	1.73	2.07	1.78

1. Find the best fitted equation of the regression line. Interpret the slope and the y-intercept
2. Compute the coefficientof determination and interpret
3. If the population of Town A will be increased by 100000, what is the expected monthly sales.