Amodel builder has 30 pieces of balsa wood in a box. four pieces are 15 in lon, 10 pieces are 12 in long, and the rest are 8 in long, what is the probability the builder will pull an 8inch piece from the box without looking?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

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?