Question

Hello im having trouble figuring these out. Please help.
style=”color:rgb(0,0,0);”>1:
The total weekly revenue (in dollars) of the Country Workshop realized in manufacturing and selling its rolltop desks is given by the following equation, where x denotes the number of finished units and y denotes the number of unfinished units manufactured and sold each week.R(x, y) = -0.25x² – 0.2y² – 0.2xy + 200x + 150yThe total weekly cost attributable to the manufacture of these desks is given by the following equation, where C(x, y) is in dollars.C(x, y) = 90x + 50y + 4800Determine how many finished units and how many unfinished units the company should manufacture each week in order to maximize its profit. 
2:
Suppose the following table gives the projected global defense spending (in trillions of dollars) from the beginning of 2008 (t = 0) through 2015 (t = 7).Year, x01234567Sales, y1.291.331.511.581.641.711.891.91(a) Find an equation of the least-squares line y for these data. (Round numerical values to three decimal places.) y =   
(b) Use the result of part (a) to estimate the rate of change in the projected global defense spending from 2008 through 2015. (Round your answer to three decimal places.) $  trillion/yr 
(c) Assuming that the trend continues, what will the global spending on defense be in 2016? (Round your answer to two decimal places.) $  trillion

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