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Unformatted text preview: HW 3 (1.1, and 1.2, 2.2, 2.3, 2.4) Math 1325 Spring 2010 Calculus with Applications I Due on: 2/5 Name Instructions: Please solve the following problems . If necessary, come to me for help during my o¢ ce hours. 1. Find the equation for the line: & through ( ¡ 1 ; 3) and (0 ; 3) & horizontal through (8 ; 7) & through (2 ; ¡ 5) and parallel to y ¡ 4 x = 2 x & through (2 ; ¡ 5) and perpendicular to y ¡ 4 x = 2 x 1 2. Graph each equation: & 2 x ¡ 3 y = 1242 2 4 6 854321 1 x y & x + 4 y = 08642 2 4 6 842 2 4 x y & y + 8 = 054321 1 2 3 4 512108642 x y 2 3. Find the cost function assuming it can be represented by a linear function: & Fixed cost is $35 : 00 and 8 items cost $395 to produce & Marginal cost is $120 : 00 and 700 items cost $96 ; 500 : 00 to produce. 4. The change in a certain engineer&s salary over time can be approximated by the linear equation y = 1500 x + 47 ; 500 where y represents salary in dollars and x represents number of years on the job. According to this equation, after how many years on the job was the engineer&s salary $61 ; 000 ?...
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 Spring '08
 MATTPOLZE
 Economics, Quadratic equation

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