Exam 3
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Exam 3
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Lecture Notes
 Pages:
 5
 School:
 Purdue University
 Course:
 Ma 15200  College Algebra
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MA 15200 1 Fall 2011 Find the slope of the line PQ that contains points P 3 5 and Q 0 3 and the slope of any line perpendicular to this line Note The symbol means perpendicular so m would represent the slope of the perpendicular line A B C D E 2 Exam 3A 3 m 2 2 m 3 2 m 3 3 m 2 2 m 3 2 m 3 3 m 2 3 m 2 2 m 3 3 m 2 Which is the graph of the line with equation y 3 x 2 Each axis uses a scale of one unit per hash 4 mark and each axis is drawn boldly A B D E C 1 MA 15200 3 Between 18 5 and 20 5 years Between 20 5 and 22 5 years Between 16 5 and 18 5 years Between 22 5 and 24 5 years None of the above The number of houses H in a housing development that can be served by a water pipe varies directly as the square of the diameter of the pipe A 30 centimeter diameter pipe can service 90 houses What size diameter can service 160 houses Which statement describes the diameter of the water pipe A B C D E 6 2x y 9 0 x 2y 8 0 x 2y 9 0 x 2y 8 0 x 2 y 12 0 In 2000 23 of Americans regularly used online news as their source of information and this has been increasing at an average rate of 1 4 per year since then Write a linear function in slope intercept form where t represents number of years since 2000 to represent the percent of Americans who regularly use online news sources Use your equation to find in how many years 52 4 of Americans regularly use online news sources Which choice describes this A B C D E 5 Fall 2011 Find the equation in general form for the line through points 2 5 and 8 2 A B C D E 4 Exam 3A The diameter of the water pipe is at least 38 cm but less than 44 cm The diameter of the water pipe is at least 48 cm but less than 53 cm The diameter of the water pipe is at least 32 cm but less than 38 cm The diameter of the water pipe is at least 53 cm but less than 60 cm The diameter of the water pipe is at least 60 cm but less than 67 cm If f x 2 x 3 and g x 5 find and simplify g f x x 2 4 3x x 2 5 2 x 3 f x x 2 5 f x 2 2 x 3 x 1 5 f x 2 x 3 x 2 5 f x 2x 1 A g f x B g C g
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