Advertising ($ thousands)	Number of Agents	Annual Sales ($ millions)
249	15	30
183	16	32
310	21	49
246	18	45
288	13	36
248	21	43
256	20	40
241	19	41

	Data for several different real estate companies is given. For each one we have the amount spent on advertising, the number of agents in the company and the annual sales (in millions)
a)	Find out if there is a significant relationship between Sales and Advertising and Number of Agents.
b)	If the above is true, further examine if both x-variables are significant
c)	Using the best model in this situation predict Sales when Advertising is 250,000 amd there are 17 agents.

I want to know a), b) and c) answers and excel fomulars!