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Practice Test 2 - Precalculus I - Spring 2012 | MATH 121, Exams of Pre-Calculus

Lansing Community CollegePre-Calculus

Material Type: Exam; Class: Precalculus I; Subject: Mathematics; University: Lansing Community College;

Typology: Exams

2011/2012

Uploaded on 03/23/2012

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angelo-de-la-casa 🇺🇸

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Dr. Ghaussi MATH 121, Spring 2012, Test #2 (R6, R7, 2.1 — 2.5) Name Directions: Read cach question carefully before giving an answer. You must show all necessary work to receive full credit. Calculators are allowed (books and notes are not). 1. (15 points) Determine the intervals on which the functiot (a) Increasing, (b) Decreasing, (c) Constant, 2. (10 points) The length of a rectangular parking lot is 40 ft more than the width. If the parking lot is w feet wide, express its area as a function of the width. cb rr ar ER orig be Oe 3. (15 points) Given that f(x) =x? -3x+land g(x)=¥4—x, (a) find (f +2)@), and (f/ gy). (b) Find domain of (f / g)(x). va