Select answer from the top-down menu to correctly complete the statementsa scale factor would it be 2 or 0.5this scale factor is? an enlargement or a reduction

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.

Find the maximum value of p= 4x + 5y subject to the following constraints :

Predict which statements are true about the intervals of the continuous function. check all that apply