A high school counselor conducted a study over 16 consecutive quarters to determine the number of
students with part-time jobs. Each student in the
2014 graduating class is surveyed once per quarter
for all four years of high school. The graph below
shows the data for each quarter the survey was
conducted.
Number of Students with Part-Time Jobs
Number of students
70
60
50
40
30
20
10
0
0

12 14 16
2.
4
6 8 10
Quarter
During which of the following periods is the increase
in the number of students with part-time jobs
largest?
A) Quarters 4 through 6
B) Quarters 7 through 10
C) Quarters 11 through 14
D) Quarters 13 through 16

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.