Brian decided to start a dog-walking service. he's going to charge each dog owner $4.50 to walk one dog and $6.75 to walk two dogs. approximately how much will he earn if he walks 13 single dogs and 9 sets of two dogs?

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).