Wilbur landed his plane

the elevation relative to the ground ( in meters) as a function of time (in seconds) is graphed

how long was the decent by 50 meters ?

A)100 seconds
B)10 seconds
C)250 seconds
D)50 seconds

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?