If δabc ≅ δfde, which of the following statements is true?

a.∠a ≅ ∠f
b.∠b ≅ ∠f
c.∠a ≅ ∠d
d.∠b ≅ ∠e

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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?