Do not include anything other than numbers in your responses. For example, do not include comma or dollar sign in your numbers. As a rule of thumb, keep 2 decimal places for larger numbers and 3 decimal places for smaller numbers less than 1.

Develop a linear trend equation for the following data. Then use the equation to predict the demand of period 7 and 8.

-	Period	Demand
	1	117
	2	126
	3	151
	4	157
	5	177
	6	172
Sum	21	900

a) Sum of (Period Squared): _______ b) Sum of (Period*Demand): _______ c) Slope: _______ d) Intercept: ______ e) Forecast of Period 7: _______ f) Forecast of Period 8: _______