ExamView - FINAL EXAM REVIEW 2011.tst
ExamView - FINAL EXAM REVIEW 2011.tst
ExamView - FINAL EXAM REVIEW 2011.tst
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<strong>FINAL</strong> <strong>EXAM</strong> <strong>REVIEW</strong> 2011<br />
____ 28. y ≥ |x + 3| – 2<br />
a. c.<br />
b. d.<br />
____ 29. A group of 52 people attended a ball game. There were three times as many children as adults in the group.<br />
Set up a system of equations that represents the numbers of adults and children who attended the game and<br />
solve the system to find the number of children who were in the group.<br />
Ï<br />
Ï<br />
a + c = 52<br />
a.<br />
Ô<br />
Ì ; 39 adults; 25 children c.<br />
Ôa + c = 52<br />
Ì ; 25 adults; 39 children<br />
ÓÔ<br />
a = c + 3<br />
ÓÔ<br />
c = a + 3<br />
Ï<br />
Ï<br />
a + c = 52<br />
b.<br />
Ô<br />
Ì ; 39 adults, 13 children d.<br />
Ôa + c = 52<br />
Ì ; 13 adults, 39 children<br />
ÓÔ<br />
a = 3c<br />
ÓÔ<br />
c = 3a<br />
Solve the system.<br />
____ 30.<br />
Ï<br />
Ô−4x + 4y = −8<br />
Ì<br />
ÓÔ<br />
x − 4y = −7<br />
a. (3, 5) b. (5, 3) c. (–3, –5) d. (–5, –3)<br />
7
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