D=u^2/2a u=30.6 correct to 3 significant figures
a=5.2 correct to 2 significant figures

a) Calculate the upper bound for the value of D. Give your answer correct to 6 significant figures.

The lower bound for the value of D is 88.8860 correct to six significant figures.

b)
i) By considering bounds, write down the value of D to a suitable degree of accuracy.
ii) Give a reason to your answer

​

Find the amount in a continuously compounded account for the given condition. principal: $1000, annual interest rate: 4.8%, time: 2 yr

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

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?