The student council consists of 32 girls and 18 boys. Twenty five of the girls and15 of the boys are presently enrolled in algebra, if one student is selected at random, what is the probability that the student is a girl or take algebra?

In the geometric progression –3, 12, −48… what term is 3,072?

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?

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.