SHORT ANSWER, with work required to be shown, as indicated. 22. Let / (x) =x - 5 and g(x) = vx+4. (a) Find _ (-3). Show work. (b) Find the domain of the quotient function _. Explain. 23. Points (-9. 5) and (3. I) are endpoints of the diameter of a circle. (a) What is the length of the diameter? Give the exact answer, simplified as much as possible. Show work. (b) What is the center point C of the circle? (c) Given the point C you found in part (b), state the point symmetric to C about the x-axis. 24. Find the equation for a line which passes through the points (5, 2) and (7, -8). Write the equation in slope-intercept form. Show work. 25. Bob, a resident of Metropolis, pays Metropolis an annual tax of $85 plus 1.4% of his annual income. If Bob paid $1,030 in tax, what was Bob's income? Show work. 26. Let / (x) = Br- + 9 and g(x) = x -2. (a) Find the composite function (fog)(x) and simplify. Show work. (b) Find (fog)(-1). Show work. 27. Find the exact solutions and simplify as much as possible: 5r+ 12 - 20x. Show work. 28. Given the function / (x)= -x-8, find a formula for the inverse function. Show work