The volume of a cube is increased from 27 cubic centimeters to 31.617 cubic centimeters. Using differentials determine:
(a) By approximately how many centimeters does the side length of the cube increase?
(b) By approximately how many square centimeters does the surface area of the cube increase?
(c) By approximately what percentage does the surface area of the cube increase?

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

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?

Which of the following circles have their centers in the third quadrant?