If ∆RST ≅ ∆LMN, RS = 15, MN = 20, RT = 18, LN = 5x - 2, and LM = 3y + 6, find the values of x and y.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

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?