Last Sunday, the th Avenue rock band sold a total of tickets for their concert at a local arena with proceeds totaling . There are three types of seat tickets: a ground level seat costs , a mid-level seat costs , and an upper-level seat costs . The number of tickets sold for upper level seats is equivalent to the sum of the number of tickets sold for ground and mid-level seats combined. Define the variables and write a system of equations to represent the situation.

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.

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?

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.