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Unformatted text preview: Test 1 study guide (Show all your work) Math 1101 Fall 11 No.: _______ Name: ________________ 1. i). Consider the following table. s 70 73 66 66 64 t 149 175 146 126 138 A) Is t a function of s ? B Is s a function of t ? ii). The following table gives values for a function f(x) . x 6 4 5 7 8 f(x) 3 7 11 5 2 a) For what value(s) of x does f(x)= 7 ? Answer: x= _____ b) f(7)= _____ iii) Determine the domain of the function x x f 3 12 ) (- = and write your answer in interval notation. iv) Determine the domain of the function 12 3 15 7- + = x y and write your answer in interval notation. 2. Suppose the revenue for the manufacture of golf balls is given by the function R(x)=1.79x, where x is the number of golf balls sold. a). What is R(3000)? Interpret this result in words. b). What is the revenue from the sale of 2000 balls? c) What is the slope of the revenue function? 3. The number of welfare cases during 1997-2008 in a city is given by the model , 22009 105 98 2 +-- = x x y where x is the number of years after 1995.where x is the number of years after 1995....
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- Fall '08