Math Assessment - College of Human Ecology Cornell...

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College of Human Ecology Cornell University Ithaca, New York Department of Policy Analysis and Management PAM 200 Intermediate Micro PAM 210 Intro Stats A. Sinan ¨ Un¨ur – Spring 2008 Math Assessment – Answers January 30, 2008 Multiple Choice MC 1) Consider a number x > 1. How much greater is x 2 than x ? ( a ) 1 ( b ) 2 ( c ) x ( x - 1 ) ( d ) ( x + 1 )( x - 1 ) Answer : 1c . We have: x 2 - x = x ( x - 1 ) . MC 2) Suppose a function f is defined as f ( x ) = 2 x + 1 and another function g is defined as g ( x ) = f ( x )+ 3 . Then: ( a ) g ( 5 ) = 14 ( b ) g ( 5 ) = 13 ( c ) g ( 5 ) = 11 ( d ) g ( 5 ) = 10 Answer : 2a . f ( 5 ) = 2 × 5 + 1 = 11. Therefore, g ( 5 ) = 11 + 3 = 14.
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MC 3) Consider the equation x = 3 . The value or values of x that satisfy this equation are: ( a ) {- 9 , 9 } ( b ) { 9 } ( c ) {- 3 , 3 } ( d ) { 3 } Answer : 3b . 9 = 3 × 3. Therefore, 9 = 3. MC 4) Consider the equation | x | = 1 . The value or values of x that satisfy this equation are: ( a ) {- 1 , 1 } ( b ) { 1 } ( c ) {- 1 } ( d ) none of the above. Answer : 4a . The absolute value of x , denoted | x | , is defined as | x | = ± - x if x < 0 x if x 0 . MC 5) Consider an exam where there are 10 questions worth 1 point each and 10 questions worth 2 points each. You have 60 minutes to complete the exam. You want to use all the time available to you and you allocate your time
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This note was uploaded on 05/12/2008 for the course PAM 2000 taught by Professor Evans,t. during the Spring '07 term at Cornell University (Engineering School).

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Math Assessment - College of Human Ecology Cornell...

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