A fruit stand has to decide what to charge for their produce. They need $5 for 1 apple and 1 orange. They
also need $15 for 3 apples and 3 oranges. Put this information into a system of linear equations.
Can we find a unique price for an apple and an orange?

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?