1 DATE PERIOD Chapter 1 Test, Form 3 SCORE x3 - y3 -1(x + 2y ) -3 1. Evaluate − if x = 4 and y = -2. 2 2 1. 2. Evaluate (n - v) 2 + 3v 3 if n = 5 and v = -2. 25 Sometimes; if a = -2b, the value of the 3. expression is 0. 2. 3. Determine whether the statement is sometimes, always, or never true. Explain your reasoning. If a and b are real numbers, then - a + 2b is negative. 13.5648 in 3 4. The formula for the volume of a cylinder is V = π r 2h, where r is the radius of the base and h is the height of the cylinder. Find the volume of a cylinder with a radius of 1.2 inches and a height of 3 inches. Use 3.14 for π. 4. 5. Name the sets of numbers to which each number belongs. 5. a. a. -4 c. 0 15 b. √ 3 d. − 4 e. 2 Z, Q, R b. I, R c. W, Z, Q, R d. Q, R Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. e. N, W, Z, Q, R 6x + 10y + 5 3 2 6. Simplify − (16 x - 8) + − (15 y + 12). 6. 7. Write a verbal expression to represent the algebraic expression 4(n 2 + 2n). four times the sum of the square of a number and 7. twice the same number 8 3 For Questions 8–11, solve each equation. 8. all real numbers 8. -6 (n - 8) = 4 (12 - 5 n) + 14 n 9. 2 3x - 5 = 14 {- −23 , 4} 9. 1 10. A = − h(a + b), for a 2 10. 11. y - 8 + 7 = 3 11. 2A a=− -b h Ø = length; (4 ) = 1 2+ − +3 12. Define a variable, write an equation, and solve the problem. 2 + 10; The width of a rectangle is 3 meters more than one-fourth its length: 8 meters length. The perimeter is 10 meters more than twice its length. 12. width: 5 meters Find the length and width. Chapter 1 59 Glencoe Algebra 2 Assessment NAME NAME 1 DATE Chapter 1 Test, Form 3 1 13. The formula for the area of a triangle is A = − bh, 2 where b represents the base length, and h represents the height. The perimeter of the triangle shown is 28 inches. Write an equation for the area A of this triangle in terms of its base length b. PERIOD (continued) h 10 inches 13. 1 A=− b(18 - b) 2 b inches For Questions 14 –19, solve each inequality. Graph the solution set on a number line. 4 x-3 14 < − 14. − 5 5 17 {x x > − 4} 14. 3 13 7 15 4 17 9 19 4 15. -3(5 y - 4) ≥ 17 2 4 4 2 4 2 3 1 4 3 {y y ≤ - −31 } 15. -1- 2 - 1 0 3 3 1 3 16. {x x ≤ -4 or x > 10} 16. 5 x + 2 ≤ -18 or 2 x + 1 > 21 -4 -2 0 2 4 6 8 10 12 -2 -1 0 1 4 4 4 2 4 3 4 1 5 4 18. {x x < -2 or x > 8} 18. x - 3 > 5 -6-4-2 0 2 4 6 8 10 19. 3w - 7 ≤ 2 19. {w −53 ≤ w ≤ 3} 4 5 7 8 10 11 2 3 20. Define a variable and write an inequality. Then solve the 3 3 3 3 3 3 resulting inequality. Mr. Brooks plans to invest part of $5000 a = amount in a stock that pays 8% interest annually. The rest will be invested in stock; invested in a savings account that pays 6% interest annually. 0.08a + 0.06 Mr. Brooks wants to make at least $350 on the investment for (5000 - a) ≥ 350; the first year. What is the least amount that should be invested in the stock? 20. at least $2500 Bonus A jet is flying from Hawaii to San Francisco, a distance of 2400 miles. In still air, the jet flies at 600 mph, but there is now a 40-mph tailwind. In case of emergency, how many hours after takeoff will it be faster for the jet to go on to San Francisco rather than to return to Hawaii? B: more than 1.75h Chapter 1 60 Glencoe Algebra 2 Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. 1 w - − ≤ w < 1} { 4 17. 33 17. − ≤ 3w + 9 < 12 4