Question: ln Problems 57 - 62, S(T, r)= 50(T - 40)(5 - r) gives an ice cream shop's daily sales as a function of temperature T

ln Problems 57 - 62, S(T, r)= 50(T - 40)(5 - r) gives an ice cream shop's daily sales as a function of temperature T (in °F) and rain r (in inches). Find the indicated quantity (include the appropriate units) and explain what it means.
S(80,0)

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