Question

If the price changed for a candy is p(x) cents, then x thousand candy bars will be sold in a certain city

Answer 1

hola there
please make sure your question

⛔ans)r = x(117 - x/26) ........ revenue = units x price/unit 
dr/dx = 117 - x/13 
x/13 = 117 ......... set dr/dx = 0 to find the stationary points 
x = 1521 ............ is a max because d²r/dx² < 0 

Answer: 1521