Match the steps to find the equation of the parabola with focus (-1, -8.75) and directrix y = - 9.25. 1. Find the distance from the focus to the point on the parabola. 2. 3 Choose a point on the parabola. 3. Use (x, y). 1 Square both sides and simplify. 4. Set the distance from focus to the point equal to the distance from directrix to the point. 5. Write the equation of the parabola. 6. Find the distance from the point on the parabola to the directrix.

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?