SERIOUSLY HEL What is the end behavior of the graph of f(x) = – 0.5x2 – 3x – 4?

A.
as x increases, f(x) increases;

as x decreases, f(x) decreases

B.
as x increases, f(x) decreases;

as x decreases, f(x) decreases

C.
as x increases, f(x) increases;

as x decreases, f(x) increases

D.
as x increases, f(x) decreases;

as x decreases, f(x) increases

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?