The length of a rectangle is the square root of 100 times an unknown number, x. the width is one-half an unknown number, y, less three-halves x. if the area of the rectangle is 125 cm2, find an equation that would give the width of the rectangle given the length.

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?