Draw a tape diagram to represent the problem. In Mr. Dutton's class there are 4 boy for every 5 girl ?

Use the tape diagram above to answer the question.
If there are 16 males, how many females are in Mr. Dutton's class?

If there are 18 student in Mr. Sutton's class, how many boy are there? How many girl are there?

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?