Leon started making contributions to a Traditional IRA when he got his first job, at age 36. His contributions averaged $1,900 annually. Leon was in the 35% tax bracket during his working years, when he continued to make these annual contributions. The average annual rate of return on the account was 6.1%. Upon retirement at age 64, Leon stopped working and making IRA contributions. Instead, he started living on withdrawals from the retirement account. At this point, Leon dropped into the 25% tax bracket. Factoring in taxes, what is the effective value of Leon's Traditional IRA at retirement? Assume annual compounding. (4 points) $122,607.14 $173,536.23 $86,013.62 $99,246.49

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.

Anyone know? will mark brainliest if you're correct!

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.