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 Mathematics 141 Practice quiz 1NUMBERS Submit over the internet When you are sure of your answers, send them to your Professor: Enter your name above Enter preferred email address above Enter student I.D. above
 [1] Enter the value of : -5(32 - 2) - 2(2 - 23)

 [2] Which of the following illustrates the distributive property? (a) 2(x + y) = 2x + 2y (b) (xy + 1)(x - 1) = (yx + 1)(x - 1) (c) a(bc) = (ab)c (d) x.1 = x (e) x + 0 = x (f) none of the above

 [3] Half of Bob's monthly paycheck is spent on rent ; Bob's food costs \$270 per month. after Bob pays for rent and food, only 20% of his paycheck remains. Which of the following is Bob's monthly paycheck? (a) 800 (b) 900 (c) 950 (d) 1000 (e) none of the above
[4] The following table lists HDTV purchases predicted in Belleville, Calif.

 Year 2002 2003 2004 2005 2006 Number of HDTVs 2 20 200 2000 5000 Total value of all HDTVs sold 4000 30 000 220,000 1,800,000 3,000,000
In which year will the average value of one new HDTV in Belleville fall below \$1000 ?
(a) 2002
(b) 2003
(c) 2004
(d) 2005
(e) 2006
(f) none of the above
 [5] If x = 2 and y = -3, which of the following is the value of   2x - y - 5x - 4 (a) 0 (b) (-½) (c) 3 (d) 24/7 (e) undefined
 [6] Which expression below is equal to : [3x -(y - 2x)] - [2y + (x - y)] ? (a) 2x - 4y (b) -2y (c) 4x - 2y (d) 6x - 4y (e) none of the above
[7]
Which single fraction is equal to the following?
 ( 13 - 1 ) ( 23 - 12 )

 (a)   - 19 (b)   - 12 (c)   - 56 (d)   - 1718 (e) none ofthe above
[8]
 Tim's logging crew can cut down a tree in 40 minutes. Sven's logging crew can cut down a tree in 45 minutes. What is the total number trees cut in 12 hours by both crews ?
 D    D
(a) 12
(b) 18
(c) 24
(d) 27
(e) 34
(f) none of the above
[9]
 Enter the value of the expression [1 - ( |-3| - |-4| )] :
[10]
 A square pasture 100 meters on each side must be fenced on its perimeter and divided in half by a vertical fence. How many meters of fence material will be needed?
Enter (in the answer box, right) the length of fence material needed :

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