A cup of Starbucks Macchiato will cost you around $5, and a similar cup at McDonald is about $2.90. The exotic Indonesian Civet Coffee will cost around
$20 per cup. What is the most that you are willing to pay for a cup? Is it worth to
pay more? Do you have any consumer surplus on this consumption?

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

3a + 5b - 7 = 0 a - 2b - 4 = 0 solve the system by the elimination method. check your work {(96/11, -5/11)} {(34/11, -5/11)} {(32/33, 5/11)}

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?