Math 153 quiz_3_soln

# Math 153 quiz_3_soln - 25 L S = 75 L 3 Let f x = √ 8 x 2...

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Math 153 Name: SOLUTIONS Quiz 3 Show your work for full credit. February 21, 2008 1. Find the slope-intercept form of the equation of the line parallel to the line 3 x + 5 y = 7 and having x -intercept ( - 4 , 0). 3 x + 5 y = 7 5 y = - 3 x + 7 y = - 3 5 x + 7 5 m = - 3 5 y - 0 = - 3 5 ( x - ( - 4)) y = - 3 5 x - 12 5 2. A discount outlet is oﬀering a 25% discount on all items. Write a linear equation giving the sale price S for an item with list price L . Simplify your answer. S = L
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Unformatted text preview: -. 25 L S = . 75 L 3. Let f ( x ) = √ 8 + x + 2. Evaluate and simplify (a) f (-8) f (-8) = q 8 + (-8) + 2 = √ 0 + 2 = 2 (b) f (1) f (1) = √ 8 + 1 + 2 = √ 9 + 2 = 5 (c) f ( x-8) f ( x-8) = q 8 + ( x-8) + 2 = √ x + 2 4. Find the domain of the function f ( x ) = √ x x-5 . Give your answer using interval notation. [0 , 5) ∪ (5 , ∞ )...
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## This note was uploaded on 04/08/2008 for the course MATH 153 taught by Professor Thomas during the Spring '08 term at Wisc Platteville.

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