Stor. 155

Stor. 155 - y=-10x + 1600 y=-10(85) + 1600=750 million b....

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1.3: 12.) g(x) is linear because the g(x) points increase at a constant value m=(-4+9)/(0+10)=1/2 , b=g(0)=-4 , g(x)=1/2x-4 56.) a. -1 b. 2 c. 0 d. 1 e. -1/2 f. undef. g. 3 h. -1/3i. -2 60.) b=(-1/3)-1/3(0)=-1/3 y=1/3x-1/3 68.) 3x-4y=8 , -4y=-3x+8 , y=3/4x-2, m=3/4 b=-1-3/4(1/3)=-5/4 y=3/4x-5/4 76.) The slope of the line is negative (-4/3). The y-intercept is always going to be 4/3 times bigger than the x-intercept. 1.4: 6.) a. cost=.15x + 350 , revenue=.5x , profit=(.5x) – (.15x + 350) b. .15x + 350=.5x .35x=350 x=1000 c. .5(1500) – (.15[1500] + 350)=750 – 575=175 10.) a. m=(800-600)/(80-100)=-10 b=600 – (-10)(100)=1600
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Unformatted text preview: y=-10x + 1600 y=-10(85) + 1600=750 million b. For every \$5 increase in price, sales of cell phones decrease by 50 units. 14.) a. (1998, 190) and (1999, 205) with the slope between them being 15. b. This shows that swimming pool sales increased at a faster rate between 1998 and 1999 than at any other time period, as shown by the slope of 15 that existed between the two years. Other Questions: 1.) Late homework is not accepted.l 2.) Julianne Anderson, the IA. 3.) a, b, d, f, and g are all allowed and encouraged....
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This note was uploaded on 06/07/2011 for the course STOR 112 taught by Professor Rubin,david during the Fall '06 term at UNC.

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