4. Identify the means and the extremes in each of the following proportions. a 4:24 = 2:12
b. 24/5 = 15/4
C. 4:8 = 8:16
d. 5750 = 9/25

1. are the triangles similar and if so why? what is the value of x? show your work.

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?

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