OCTOBER PSAT 2015 HELP

Post/discuss/explain questions that are confusing

No caculator math section: # 12 and #13 please… I got them wrong bc I was unsure of how to approach those questions https://collegereadiness.collegeboard.org/sites/default/files/psat_nmsqt_practice_test_1_answers.pdf

The explanations were not helpful :frowning: