16. peter works part time for 3 hours every day and cindy works part time for 2 hours every day. a. if both of them get $4.50 an hour, write an inequality to compare peter’s and cindy’s earnings. b. what should cindy’s per-hour income be so that she earns at least $14 a day? write an inequality and an explanation of how to solve it.

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Which of the following vectors are orthogonal to (2,1)? check all that apply