6. The total revenue, in dollars, from the sale of z units of a product is given by R(z) == 250z+2250 a. Find the marginal revenue when 25 units are sold. In(5z + 10) 4-to 25ox 4 22 So Inesx lo) Insrau-Sx - 2 Sof) + 2250- In(S + lo) Rcx)= 250 + 0-CIn(s))+G 10) =250 -C)+ : 250- C) 1-1o-4= lo Piczs)=25o - = 29.16 (#)- 5249.96 b. Interpret your result. After 25 enis har ben Sold, marsina! remr chense of the 13 4249. 76 7. Find the slope of f(z) -In(x+1) +-5 at z 0 Plosse-(+)+20) -1-CUNO +o)+o slope = o endafnd /oNE or 8. Is g(z) = re -x concave up or concave down at r =-1? g'rr)-Clee") +Cxer)-2x =e* +xe- 2x skD= e+-le-261) 367 +(-3673)-G2) ン2 Lompove

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