chrissy spent 5.00 on supplies and lemonade powder for her lemonade stand. she charges .50 cents per glass. a. write a function P(x) to represent her ptofit per glass so;d. (i have P(x)=0.50x-5....i think thats correct?) B. find the inverse function P-1(X).....(need help on this one) c. what do x and P-1 represent in the context of the inverse function? D. how many glasses must chrissy sell in order to make a 3.00 profit?