-1Week 7 - MAT 157-CheckPoint Template Student Name: Angie...

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MAT 157-CheckPoint Template Student Name: Angie Week #: 7 Instructions: For each assigned problem type in the page number, problem number, and complete solution, showing all work for each problem (using either MathType or Equation Editor recommended) in order to receive credit. One problem in each row, please. Save as a Word file and post to your Individual Forum as an ATTACHMENT. Page # Prob # Complete Solution 798 26 Quadratic since the x is squared 28 Exponential since there is an x in the exponent 30 This is a linear function, since it can be written in the form b mx y + = . We get that: y = -12x + 23, so m = -12 and b = 23.

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32 x y b 1 0 1 2 -1 1 8 -7 1 10 -9 1 20 - 19 1 40 - 39 1 x y b b x y + = + - = 42 This is not linear since the last 3 values of the table have the same y value for 3 different x values which would mean we have a horizontal line but the first 3 values say we have a non horizontal line. This is not linear 46 The number of years passed from 1971 to 1991 is: 1991 – 1971 = 20. So, to find the approximate value of the baseball cards in 1991, you look for the value indicated in the graph for an x=20 years. This value is
approximately \$1100. 48

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This note was uploaded on 10/24/2010 for the course MAT 157 MAT 157 taught by Professor Kitchens during the Spring '10 term at University of Phoenix.

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-1Week 7 - MAT 157-CheckPoint Template Student Name: Angie...

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