1. The domain of a relation is all positive integers less than 4. The range of y or the relation is 2 plus x, where x is a number of the domain. Write the relation as a table of values and as an equation. A. B. None of these. C. D. Hint 2. If j(x) = x2 + 1, find j(a + 1). A. a2 + 2a + 2 B. a2 + a + 2 C. a2 + a + 1 D. a2 + 2a + 1 Hint 3. State the domain of the function A. all real numbers except 0 B. all real numbers except 0, 1, and 3 C. all real numbers except 0 and 3 D. all real numbers except 3 Hint 4. The revenue for the sale of x objects is r(x) = 8x. The cost of manufacturing x objects is c(x) = 0.5x + 300. Write the profit function. A. 7.5x + 300 B. 8.5x + 300 C. 8.5x - 300 D. 7.5x - 300 Hint 5. Find (x) if f(x) = 3x2 + 1 and g(x) = 2x + 3. A. 6x2 + 5 B. 12x2 + 36x + 28 C. 6x2 - 5 D. 12x2 - 36x + 28 Hint 6. State the domain of (x) for f(x) = and g(x) = A. B. C. D. Hint 7. Find a linear equation that can model the data shown in the graph. A. 2x + 3y + 6 = 0 B. 3x - 2y + 6 = 0 C. 2x + 5y - 3 = 0 D. 2x -3y + 6 = 0 Hint 8. Determine whether the graphs of the pair of equations 3x - 2y = 7 and 3x + 2y = 7 are parallel, coinciding, or neither. A. parallel B. coinciding C. all are correct D. neither Hint 9. Which is the best prediction equation for the data? A. y = 20x - 19,950 B. y = 10x - 19,950 C. y = 5x - 19,950 D. y = 25x - 19,950 Hint 10. Use a graphing calculator to find the equation of the regression line. A. y = 12x - 23,947 B. y = 2x - 25 C. y = x - 576 D. y = 23x - 21,000 Hint 11. Which is the graph of the inequality x + 2y - 2 0? A. B. C. D. Hint 12. Find f(2b2) for f(x) = x2 – 4x A. 4b2 - 8b8 B. 2b4 - 8b2 C. -4b2 D. 4b4 - 8b2 Hint 13. Which equation has an undefined slope? A. y = 4x + 2 B. x = 4 C. y = 4 D. y = 4x Hint 14. Write a linear equation to represent the cost y of a long distance calling plan that charges \$5.99 plus \$0.07 per minute for x number of minutes. A. y = 5.99x + 0.07 B. y = 0.07x + 5.99 C. y = x + 5.99 D. y = x - 5.99 Hint 15. Write the equation of the line that is parallel to 2x - 3y - 15 = 0 and that passes through the point (3,4). A. 2x - 3y + 6 = 0 B. 2x - 2y + 6 = 0 C. 2x + 5 - 3 = 0 D. 2x + 3y + 6 = 0 Hint 16. Ilene analyzed her test scores and determined the equation of the best-fit line was y = 4.25x + 72. Predict her score for the 5th test. A. 98.5 B. 72.5 C. 88.75 D. 93.25 Hint 17. Graph the equation A. B. C. D. Hint 18. What is the value of y when x = 2? A. 1 B. undefined C. 2 D. 0 Hint 19. Which is the graph of the compound inequality 0 x + y 4? A. B. C. D. Hint 20. The maximum cost of Ana's long-distance plan is \$5.00 each month plus \$0.10 per minute.Name a combination of minutes and cost that fit this inequality. A. (15,10) B. (10, 6) C. (10,15) D. (6,10) Hint