1. Describe the graph. A. relation and function B. neither a relation nor a function C. not a relation but a function D. relation but not function Hint 2. Given f(x) = x2 + 1 and g(x) = 2x - 1, find (f - g)(x). A. x2 - 2x + 1 B. x2 - 2x - 1 C. x2 + 2x D. x2 - 2x + 2 Hint 3. Find the first three iterates, x1, x2, and x3, of the functionf(x) = 3x - 1 for an initial value x0=1. A. 8, 23, 88 B. -4, -13, -40 C. 5, 14, 41 D. 2, 5, 14 Hint 4. 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. 47,500 people per year B. 475 people per year C. 47.5 or about 48 people per year D. 4750 people per year Hint 5. Find the zero of the function f(x) = -8x + 4. A. B. -2 C. 2 D. Hint 6. Jane is opening a home-based business. She determined that she will need \$4500 to buy a computer and supplies to start. She expects expenses for each following month to be \$800. Write an equation that models the total expense y after x months. A. y = 800x - 4500 B. y = 4500x + 800 C. y = 800x + 4500 D. y = 4500x - 800 Hint 7. Determine whether the graphs of the pair of equations 2x + 3y = 6 and 4x + 6y = 5 are parallel, coinciding, or neither. A. coinciding B. neither C. all are correct D. parallel Hint 8. Determine the equation of the perpendicular bisector of the line segment with endpoints S(2, 6) and T(10, -4). A. 4x - 5y + 19 = 0 B. 5x + 4y + 19 = 0 C. 5x - 4y - 19 = 0 D. 4x - 5y - 19 = 0 Hint 9. Which is the graph of the inequality x + 2y - 2 0? A. B. C. D. Hint 10. The compound inequality 300 < x + y < 1200 and x = 2y is shown in the graph below. List the possibilities of Bobcats and Lions produced to meet the imposed conditions. A. All points on the segment of the line 2x = y whose endpoints are (100, 200) and (400, 800) and whose coordinates are integers. B. All points on the segment of the line 2x = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers. C. All points on the segment of the line x = 2y whose endpoints are (100, 200) and (400, 800) and whose coordinates are integers. D. All points on the segment of the line x = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers. Hint 11. State the domain and range of the relation. Then state whether the relation is a function.{(2,-1), (-2,4), (2,5), (3,6)} A. Domain {-1,4,5,6}Range {-2,2,3}The relation is a function. B. Domain {-2,2,3} Range {-1,4,5,6}The relation is not a function. C. Domain {-1,4,5,6}Range {-2,2,3} The relation is not a function. D. Domain {-2,2,3} Range {-1,4,5,6} The relation is a function. Hint 12. Write an equation of the line that passes through the points (-2, 4) and (6, -4). A. B. C. D. Hint 13. Graph the data on a scatter plot. A. B. C. D. Hint 14. Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope. A. Paul's test scores are neither increasing nor decreasing. B. Paul's test scores improve an average of 15 points with each test. C. Paul's test scores improve an average of 5 points with each test. D. Paul's test scores improve an average of 3 points with each test. Hint 15. Which of the following graphs represents the function: A. B. C. D. Hint 16. 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. piecewise function B. absolute value function C. greatest integer function D. step function Hint