A+ Answers

1.         Which of the corner points for the system of linear inequalities graphed below maximizes the objective function  P = 5x + 4y ?

1.  _______
A.        (0, 4)               C.  (1, 2)
B.        (3, 0)               D.  (2, 0)
2.         Find the equation of the line passing through (1, – 7) and (4, 1):                 2.  _______
A.   8x + 3y  =  – 13            B.  2x + y  =  – 5            C.  2x – y  =  9           D.  8x – 3y  =  29
3.         A survey of 15 randomly selected students responded to the question “How many hours a day do you work on MATH 106?” as follows:  3, 2, 2, 4, 6, 5, 2, 5, 1, 4, 2, 3, 2, 3, 4 .  Which histogram below accurately reflects the frequency distribution of the 15 students’ responses?
3.  ______
HISTOGRAM    A                                                      HISTOGRAM     C

6
4
2
0
1          2          3          4          5          6

6
4
2
0
1          2          3          4          5          6
HISTOGRAM    B                                                      HISTOGRAM    D

8 6 4
2
0
1          2          3          4          5          6

8 6 4
2
0
1          2          3          4          5          6
4.         Identify the single row operation that transforms the matrix as shown:                  4. ________

A.        0.5

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