Use the substitution method to find the value of y in the given system of equations. Express non-integer values as fractions in lowest terms.
(y = -4x+2
5x -5y = 10

y=

The depreciation per unit for a company

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

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?