1. Find the domain of the functions: a. b. 2. a. For the graph of the function f (x) = x2 - 5x + 6, find the vertex and the axis of symmetry. b. One number is 2 more than another. The product of the numbers is 35. Find the numbers. 3. A salesperson earns a base salary of $2,000 per month and a commission of 5% on the amount of sales made. If the salesperson has a paycheck of $3,006 for one month, what was the amount of sales for the month? 4. a. For x values in what interval (s) is the function increasing? b. Determine whether the graph of y = 3 + x2 is symmetric with respect to x-axis, y-axis, or the origin. 5. a. Find the zero of the function f(x) = 8 - 2x b. Write the equation for a function that has a graph with the given properties. The shape of y = |x| but stretched vertically by a factor of 2 and shifted right 3 units. 6. Find k so that the line containing the points (-3,k) and (4,8) is parallel to the line containing the points (5,3) and (1, -6)