1. If f(x) = x+4 and g(x) = 2x2-x-1, find the composition (f o g)(x)
2. Write the following sentence as an equation: y varies directly as x
3. Write the following sentence as an equation: x is directly proportional to y and is inversely proportional to the cube of z
4. What are the zeros of the parabola: f(x) = x2 - 7x + 10 (that is, what are the x-intercepts or the points where the graph crosses the x-axis)?