Algebra Formative Review March 24, 2010

Question #1 Which system of equations could be used to find the length of a rectangle that has a perimeter of 28 inches and has length that is two more than five times the width? a.2l + 2w = 28b. 2l + 2w = 28 l = 5wl = 5w + 2 c.l + w = 28d. l + w = 28 w = 5lw = 5l + 2

Question #2 The school cafeteria sells a hamburger meal for $5 and a vegetarian meal for $4. On Tuesday the cafeteria sold 3 more hamburger meals than vegetarian meals. The income from these sales was $357. Which system of equations can best matches this situation? a.5h + 4v = 357b.5h + 4v = 3 v = h + 3h = v c.4h + 5v = 357d.5h + 4v = 357 h = v – 3h = v + 3

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Question #5 Which is not a solution to the graph to the right? a.(0, 0) b.(2, 3) c.(-3, -3) d.(0, -5)

Question #6 What is the equation of a line that contains the point (-2, -14) and has a slope of 5? (hint: Calculator table!!!) a.y = 5x - 4 b.y = -4x + 5 c.y = x – 5 d.y = x + 4

Question #7 Which of the following best describes the solution(s) to the system of equations below? x – 2y = 8 y = ½ x – 4 a.There is one solution b.There are no solutions c.There are infinite solutions d.There are two solutions

Question #8 Which statement is true about the equations y = 5x – 2 and y = 5x + 6 a.They are perpendicular b.They intersect c.They are parallel d.The system has infinite solutions

Question #9 The slope of the equation y = -6x + 4 is doubled and the y-intercept is cut in half. Which of the following statements best describes the graph of the new equation? a.The graph is less steep b.The graph is shifted up 2 spaces c.The graph is steeper d.The graph remains the same

Question #10 Which statement best describes the range of the function to the right? a.All real numbers b.R = {-1} c.R = {-1<y<15} d.All real numbers greater than -1

Question #11 What is the equation of a line with a slope of -1 that passes through the point (-2, 8)? (hint: y = mx + b form, use the table in your calculator!) a.x + y = 6 b.-x + y = 6 c.x – 6 = y d.None of the above

Question #12 The area of a rectangle can be represented by the equation A = 6(x - 5). What is a reasonable domain for this equation. (hint: What values of the domain make the area a reasonable number?) a.All real numbers b.x < 5 c.x > 5 d.x = 5

Question #13 What is the solution to the equation: 2x – 5(x + 2) < 2x + 5 (hint: Draw the river, distribute, combine like terms, move x’s to one side, move #’s to one side, solve for x) a. x < -3 b. x > -3 c. x > 1 d. x < 1

Question #14 The high school is having a play. Adult tickets cost $5.00 and student tickets cost $3.50. The total amount of money collected was $ and 75 total tickets were sold. How many adult tickets were sold? (hint: have x = student and y = adult, make an equation for total money and one for total tickets sold. Change the equations to y = mx + b form, solve by finding the intersection) a. 25 b. 50c. 75 d. None of these

Question #15 Five adults and four children went to a movie and paid $37.50 for their tickets. Another 3 adults and one child went to the movies and paid $ How much does one child ticket cost? A. $5.50B. $4.00C. $2.50D. $19