What undefined geometric term is described as a two-dimensional set of points that has no longer beginning or end

Let f (x) = x e8x. find a formula for the nth derivative of f, where n is any positive integer. use x and n in your answer if needed. f (n)(x) =

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.

An animal shelter spends $4.00 per day to care for each bird and $6.50 per day to care for each cat. olivia noticed that the shelter spent $212.00 caring for birds and cats on thursday. olivia found a record showing that there were a total of 38 birds and cats on thursday. how many birds were at the shelter on thursday?