A refiner wants to make 50 liters or sohol to sell at 28¢ a liter by mixing gasoline cost-
ing 30€ a liter with alcohol costing 20¢ a liter.
How many liters of each ingredient must be
mixed?

How many zeros does the function f(x)=4x3-x2+1 have

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?

Factor the polynomial by its greatest common monomial factor.