cm5 - MAC 1105 Module Test 5...

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Unformatted text preview: MAC 1105 Module Test 5 Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Find the requested value. 1) f(6) for f(x) = 3x + 1 if x < 1 6x if 6 ≤ x ≤ 9 6- 6x if x > 9 A) 36 B) 55 C) 4 D)- 30 Find the function value. 2) For f(x) = - |x + 5|, ¡nd f(1). A) 1 B)- 6 C) 6 D)- 5 Solve the problem. 3) If the average cost per unit C(x) to produce x units of plywood is given by C(x) = 300 x + 10 , what is the unit cost for 20 units? A) $10.00 B) $1.50 C) $5.00 D) $15.00 Graph. 4) f(x) = 1 x- 4 x-4-2 2 4 6 y 4 2-2-4 x-4-2 2 4 6 y 4 2-2-4 A) x-4-2 2 4 6 y 4 2-2-4 x-4-2 2 4 6 y 4 2-2-4 B) x-4-2 2 4 6 y 4 2-2-4 x-4-2 2 4 6 y 4 2-2-4 1 C) x-4-2 2 4 6 y 4 2-2-4 x-4-2 2 4 6 y 4 2-2-4 D) x-4-2 2 4 6 y 4 2-2-4 x-4-2 2 4 6 y 4 2-2-4 For the given function, ¡nd the indicated function value. 5) For f(x) = 3 x + 1 , ¡nd f(- 28). A)- 4 B) 3 C)- 3 D) Does not exist as a real number Solve the problem. 6) A salesperson gets a commission of $1000 for the ¡rst $10,000 of sales, and then $500 for each additional $10,000 or partial of sales. Let S(x) represent the commission on x dollars of sales. Find the value of S(75,000). A) $3750 B) $4250 C) $4750 D) $4500 Determine if the function is concave up or concave down in the ¡rst quadrant. 7) y = x 3/7 A) Concave down B) Concave up Solve the problem. 8) The number of people present at a stadium holding a big rock concert can be estimated with the following function: y = 13252x 0.76 + 0.41x + 102, where y is the number of people present and x is the amount...
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This note was uploaded on 10/18/2011 for the course MAC 1105 taught by Professor Russel during the Summer '07 term at Valencia.

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cm5 - MAC 1105 Module Test 5...

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