Demand Equation : Helen's Health foods usuallt sells 400 cans of Pro pac Muscle Punch per week when the price is $5 per can. After experimenting with prices for sme time, Helen has determined that the weekly demand can be found by using the equation
d+600-40p
Where d is thenumber of cans and p is the price per can.
Will Helen sell more or less Muscle Punch if she reaises her price from $5?
What happesn to her sales everytime she raises her price $1?
Need help with this not good with story problems, Please