Denver is about 5,200 feet above sea level. Which number line best represents this integer? A number line going from negative 7,000 to positive 7,000. A point is at 5,200. A number line going from negative 7,000 to positive 7,000. A point is at 4,800. A number line going from negative 7,000 to positive 7,000. A point is at negative 4,800. A number line going from negative 7,000 to positive 7,000. A point is at negative 5,200.

Solve the system by the elimination method. 2x + y - 4 = 0 2x - y - 4 = 0 when you eliminate y, what is the resulting equation? a.x = 0 b.4x = -8 c.4x = 8

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?

Simplify each expression. use positive exponents. show work . (x –2 y –4 x 3 ) –2