Cynthia​ Knott's oyster bar buys fresh Louisiana oysters for ​$3 per pound and sells them for ​$8 per pound. Any oysters not sold that day are sold to her​ cousin, who has a nearby grocery​ store, for ​$2 per pound. Cynthia believes that demand follows the normal​distribution, with a mean of 100 pounds and a standard deviation of 20 pounds. How many pounds should she order each​ day? Refer to the standard normal table LOADING... for​ z-values.