Question
An online retail company determined that their cost for each day, x , can be determined by the function C ( x ) = 2
An online retail company determined that their cost for each day,x, can be determined by the functionC(x) = 2x2- 20x+ 80 and their revenue by the functionR(x) = -x2+ 5x+ 58. How many days will it take for the company to earn a profit?
(a)32
(b)30
(c)5
(d)1
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Bayesian Data Analysis
Authors: Andrew Gelman, John B Carlin, Hal S Stern, David B Dunson, Aki Vehtari, Donald B Rubin
3rd Edition
1439898200, 9781439898208
