You want to buy some noodles noodles. An 8-ounce package costs $ 2.88. A 124-ounce package costs $ 4.90 4. An 18-ounce package costs $ 6.12 6.12. Which package is the best buy?

3x + 4y = 5 x- 3y = -7 solve by substitution

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?

At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.