A chemical company makes two brands of antifreeze. The first brand 35% pure antifreeze, and the second brand is 85% pure antifreeze. In order to obtain 30 gallons of a mixture that contains 70% pure antifreeze, how many gallons of each brand of antifreeze must be used?
Note that the ALEKS graphing calculator can be used to make computations easier.
First brand
gallons
Х
5
?
Second brand
Falang

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

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 of the following graphs could represent a cubic function?