1. If j(x) = x2 + 1, find j(a + 1). A. a2 + 2a + 2 B. a2 + 2a + 1 C. a2 + a + 2 D. a2 + a + 1 Hint 2. Find (x) if f(x) = 3x2 + 1 and g(x) = 2x + 3. A. 6x2 - 5 B. 6x2 + 5 C. 12x2 - 36x + 28 D. 12x2 + 36x + 28 Hint 3. The population of Abnerville was 12,500 people in 1950. In 2000, the population was 250,000. Find the average rate of increase in the population over the 50 year period. A. 475 people per year B. 47,500 people per year C. 47.5 or about 48 people per year D. 4750 people per year Hint 4. Write an equation in slope-intercept form for the line with a slope -3 and passes through the point (4, 2). A. y = -3x + 4 B. y = -3x + 2 C. y = -3x + 14 D. y = -3x - 8 Hint 5. Using the equation y = 50x + 50, predict y when x = 6. A. 250 B. 350 C. 400 D. 300 Hint 6. Determine whether the graphs of the pair of equations 3x - 2y = 7 and 3x + 2y = 7 are parallel, coinciding, or neither. A. all are correct B. coinciding C. parallel D. neither Hint 7. Write the standard form of the equation of the line that passes through the point (-1, 3) and is parallel to the graph of 2x - 7y + 1 = 0. A. 2x - 7y + 23 = 0 B. 2x + 7y + 23 = 0 C. 2x - 7y - 23 = 0 D. 2x + 7y - 23 = 0 Hint 8. Write the standard form of the equation of the line that passes through the point (-4, -2) and is perpendicular to the graph of 3x - 2y + 9 = 0. A. 2x + 3y + 14 = 0 B. 3x - 2y + 14 = 0 C. 2x> + 3y - 14 = 0 D. 3x - 2y - 14 = 0 Hint 9. Which is the graph of f(x) = [[2x]]? A. B. C. D. Hint 10. Which is the graph of the inequality x > -2? A. B. C. D. Hint 11. Which is the graph of the inequality y |x - 3|? A. B. C. D. Hint 12. State the domain and range of the relation. A. The domain includes all real numbers. The range includes all positive real numbers. B. The domain includes negative real numbers. The range includes all real numbers. C. The domain and the range include all real numbers. D. The domain includes just positive real numbers. The range includes all real numbers. Hint 13. Which function does not have a zero? A. f(x) = 3x + 5 B. f(x) = -5 C. f(x) = x - 5 D. f(x) = –5x +3 Hint 14. Write an equation in slope-intercept form with a slope of that passes through the point (-3, -5). A. B. C. D. Hint 15. Write an equation of a line that has no slope and passes throughthe point (5,-6). A. x = -6 B. y = -6 C. y = 5 D. x = 5 Hint 16. How can you tell if two lines are perpendicular? A. The slopes are reciprocals. B. The slopes are opposite reciprocals. C. The slopes are opposites. D. The slopes are the same. Hint 17. What type of relationship does the scatter plot suggest? A. no correlation B. no linear relationship C. a linear relationship with a positive correlation D. a linear relationship with a negative correlation Hint 18. Which of the following graphs represents the function: A. B. C. D. Hint 19. A bank charges a \$10 fee if the account balance is less than \$200. If the balance is in between \$200 and \$500 there is a \$5 fee. If at least \$500 is in the account, there is no fee. What type of function best represents this situation? A. step function B. absolute value function C. greatest integer function D. piecewise function Hint 20. A bank charges a \$10 fee if the account balance is less than \$200. If the balance is in between \$200 and \$500 there is a \$5 fee. If at least \$500 is in the account, there is no fee.Graph the fee schedule for different account balances. A. B. C. D. Hint