Danielle bought a new computer for $1200. Each year the value of the computer decreased by 30% of the previous year's value. At this rate, what can Danielle expect the approximate value of the computer to be in 6 years?

At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?

The radius of the sphere is 10 units .what is the approximate volume of the sphere use π=3.14