Find the center, vertices, and foci of the ellipse with equation x squared divided by 400 plus y squared divided by 625 = 1.

A. Center: (0, 0); Vertices: (-25, 0), (25, 0); Foci: (-15, 0), (15, 0)
B. Center: (0, 0); Vertices: (-25, 0), (25, 0); Foci: (0, -20), (0, 20)
C. Center: (0, 0); Vertices: (0, -25), (0, 25); Foci: (0, -15), (0, 15)
D. Center: (0, 0); Vertices: (0, -25), (0, 25); Foci: (-20, 0), (20, 0)

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?