a store is selling sculptures. the first week it prices 6 sculptures at $80 each. after each week if a sculpture is not sold it will be priced to sell for 0.85 times the previous week's price. the store needs to sell the 6 sculptures for a total of at least $270 to make a profit. what is the last week In which all 6 sculptures could be sold so that the store makes a profit?

Which of the following is true for the relation f(x)=2x^2+1

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?

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?