Apopulation of 70 foxes in a wildlife preserve quadruples in size every 10 years. the function y equals 70 times 4 ^ x, where x is the number of 10-year periods, models the population growth. how many foxes will there be after 30 years?

This is fractions casey shared a pizza with some friends.they each ate 1 third of the pizza. how many people shared the pizza

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Which is the completely factored from of xy^3-x^3y