At the beginning of the week fayez writes drown the mileage of his limousine - 2529 at the end of the week the mileage is 2834, fayez knows he used 75.2 litres of petrol during the week. the handbook states that the limo uses 1 gallon of petrol for every 20 miles. fayez wants to know if his limousine used 1 gallon of petrol for every 20 miles this week 1 gallon = 4.54 litres did his limo use 1 gallon of petrol for every 20 miles that week? explain answer in full

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?