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Exam 2 (lessons 6-10) |
Name: ____________________________ |
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Beginning Algebra Workshop |
Score: _____ of 50 points |
(2 points each) Give the correct answer:
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1) What is 4% of 30? (.04)(30) = 1.2 |
2) Simplify: 52 5 × 5 = 25 |
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3) Simplify: x4(x5) x 4+5 = x9 |
4) Evaluate 2b2 when b = -3. 2(-3)2 = 2(9) = 18 |
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5) What is the measure of the angle A? A + 35° = 90°A = 90 - 35 = 55 ° |
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6) Convert 0.125 to a percent. 12.5% |
7) Simplify w5/w2 w 5-2 = w3 |
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8) Simplify -24 = -2× 2× 2× 2 = -16 |
9) Simplify 5 - 32 = 5 - 9 = -4 |
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10) Simplify (-1)14 = +1 (There is an even number of - signs) |
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( 5 points each) Show all work necessary for the rest of the exam. Partial credit will be given for correct work only as shown on the exam paper.
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11) Solve the inequality: 8y - 5 > 3y + 10 |
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8y - 3y > 10 + 5 5y > 15 y > 3 |
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12) Solve the inequality: 2x - 3(2x + 4) £ 5(x - 1) + 3 |
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2x - 6x - 12 £ 5x - 5 + 3 -4x - 12 £ 5x - 2 -9x £ 10 x ³ -10/9 |
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13) A retailer buys a CD player at a cost of $60 and resells it at a markup of 80%. What is his asking price? |
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S = P + RP S = 60 + (.80)(60) S = 60 + 48 = $108 |
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14) Find the measure of the angle x in the diagram. y = 180° - 42° = 138°z = 180 ° - 155° = 25°x + y + z = 180 ° , so x = 17° |
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15) The perimeter of a rectangle is 34 meters and the length of one side is 12 meters.
a) What is the width of the rectangle?
P
= 2l + 2w34 = 2(12) + 2w
34 = 24 + 2w
10 = 2w
w = 5 meters
b) What is the area of the rectangle?
A = lw
A
= (12 m) (5 m) = 60 m216) Simplify: 2 - 3(23 - 5)2 - 42 ¸ 2 + 1
= 2 - 3(8 - 5)2 - 42
¸ 2 + 1= 2 - 3(3)2 - 42
¸ 2 + 1= 2 - 3(9) - 16
¸ 2 + 1= 2 - 27 - 8 + 1
= -32
Return to the Table of Contents.
Proceed with Lesson 11.
