George is building a fence around a rectangular dog run. he is using his house as one side of the run. the area of the dog run will be 240 square feet. the length of the run is 30 feet, and the width is 30 - x feet. the diagram below shows his plan.
recall the formulas for area and perimeter: a = lw and p = 2l + 2w.
]how many feet of fencing will george need for the dog run?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?