Hello please help. Write an arithmetic sequence that gives the nth positive x-intercept of the graph of f(x)=cos 1/8x. Leave ans in terms of pi.

Find the area of the triangle shown 3 by 6

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

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?