5. Simplify each expression, a. 2 3 -(-1) 3 4 3(5-2) 36 3 d. 52-(6-4)+3(11-3-) = 3 b. 2 2 4 This graph shows a proportional relationship between the number of hours (h) a business op d the total cost (C) of electricity, Select True or False for each statement about the graph, True

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?