Atree is 7 ft tall when it is planted and this type of tree grows two feet per year. how tall will the tree be in 6 years? how long will it take for the tree to reach 44ft?

The john deere company has found that revenue,in dollars, from sales of heavy-duty tractors is a function of the unit price p, in dollars, that it charges. if therevenue r is r(p)= -1/2p^2 +1900pa)how much revenue will the company generate if they sell 700 tractors? b) how many tractors does the company want to sell to maximize the revenue?