+115 Research shows that for every $0.10 increase in the price of batteries, there is a 10 pack decrease per day. If a store normally sells 600 packs of batterues $4.95, what is the optimum orice to sell batteries at?
The Answer is $5.475, I'm looking for the process
This is how I started it, (possibly wrong): (4.95 + 0.1x)(600 - x) = y
