7 The recursive formula of an arithmetic sequence is described below.
a1 = 19, An = An-1 + 6
Which represents the explicit equation of this arithmetic sequence?
A
an =
616+ 13
B
an =
6n + 19
C) an = 13n + 6
D
an = 19n +6

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?