Amachine assembly requires two pyramid-shaped parts. one of the pyramids has the dimensions shown in the figure. the other pyramid is a scaled version a irst pyramid with a scale factor of 4. what is the volume of the larger pyramid? a. 48 cubic units b. 192 cubic units c. 256 cubic units d. 768 cubic units

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?