Zack has $500 in a savings account at the beginning of the summer. he wants to have at least $200 in the account by the end of the summer. he withdraws $25 each week for food, clothes, and movie tickets. for how many weeks can zack continue withdrawing from his account?

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.

What expression is equivalent to (2x-1)(x-3)?

Which of these triangle pairs can be mapped to each other using two reflections?