if R is the revenue, S is the number of sales and P is the price. R=SP
When the price is decreased by $15 x times the price is 275-15x and the sales is 90+5x.
You want to find x when R>19600
http://i.imgur.com/kPBi5Ueh.jpg
#15
I am not good at creating equations off of word problems... I try but I always get it wrong, I'm not sure how to do any word problems like these.
275x^2 - 15x - 19600 = 0
That equation was my attempt at it, not sure if it is correct...
Any help would be great, thanks!