Which polynomial function has a leading coefficient of 1 and roots (7 + 1) and (5-1) with multiplicity 1? Of(x) = (x + 7)(x - 1)(x + 5)(x + 1)
Of(x) = (x - 7)(x - 1)(x - 5)(x + 1)
O f(x) = (x - (7-1))(x - (5 + 1)(x-(7 + )(x - (5 - 1))
Of(x) = (x + (7-1))(x + (5 + 1)(x + (7 + 1)(x + (5-1))

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.

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.