Thời gian giữa 2 lần được nhận tin nhắn điện tử của 1 máy tính tuân theo luật phân phối mũ với thời gian trung bình là 2 giờ a, tính xác suất để máy không nhân được 1 tin nhắn điện tử nào trong khoảng thời gian 2 giờ

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project