Car rental company a charges $13.00 per day plus $0.28 per mile. car rental company b charges $25.00 per day plus $0.08 per mile. for what number of miles is the cost per day the same?

Is the square root of 4 plus the square root of 16 rational?

If the discriminant if a quadratic equation is 4 which statement describes the roots?

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?