Exam 1 Practice 1

Exam 1 Practice 1 - MATH 127 MIDTERM #1 20 October 2005...

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Unformatted text preview: MATH 127 MIDTERM #1 20 October 2005 SPECIAL CODE: 1 0 2 0 0 5 p . 2 o f 6 1 . I f f ( x ) : 2 x 2 + x - 2 t h e n f ( 2 ) i s ^ ) z b ) 4 The line with equation slope, y-intercept and a ) 2 , 1 2 a n d l 2 d) -l/2, -3 and -6 a ) Q o e 0 2 ' Ifthe function a ) P o : 3 7 a n d d) Po: 9.5 and c) -2 d ) 0 e ) 4 2 . 4 y + 2 x + 1 2 : 0 h a s x-intercepf in that order, equal to: b) -2,3 and -6 e) 2,4 and 2 b) 100 (1.2)t c) 100 (0.8)t d) 20 (0.8)' e) r00 (1.2) ' P(t) : 37 (0.95)t is rewritten as P(t) : Po ek', then the values of Pe and k are: k : 0 . 0 5 1 b ) P o = 3 7 a n d k : - 0 . 0 5 1 c ) P o : 9 5 a n d k = 0 . 0 5 k : - 1 . 0 5 1 e ) P o : 3 7 a n d k : . 9 5 c\ ll2, -3 and 6 3 . T h e a v e r a g e r a t e o f c h a n g e o f f ( x ) : 2 l n ( x ) b e t w e e n x : l a n d x : 2 ( r o u n d e d t o 2 d e c i m a l s ) i s : a) 1.33 b) r.77 c) 7.27 d) 0.69 e) 1.39 4. A coffee shop sells cups ofcoffee for $1.50 each. Suppose the fixed cost is $10,000 and the variable cost is $0.10 per cup. The number of cups sold at the break even point is closest to: a) 5432 b) 2383 c) 6982 d) 8234 e) 7143 A f 00 mg dose of a certain drug is metabolized by the body in a manner so that 20"h of the remaining amount of the drug is eliminated each hour. Which of the following formulas best describes the amount of the drug remaining in the body after t hours? 7. $2000 is invested in an account where 4oh annual interest is compounded continuously. The number of years required for the value of this account to reach $10,000 is closest to: a) 35 years b) 40.2 years c) 42 years d) 127.5 years e) 125 years PDF Creator - PDF4Free v2.0 http://www....
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Exam 1 Practice 1 - MATH 127 MIDTERM #1 20 October 2005...

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