Shawn's science class has a ratio of 4: 5, girls to boys.
a. what is the ratio of boys to girls?
b. what is the ratio of boys to total students?
c. what percent of the class is boys?
d. what fraction of the class is girls?

Is this a polynomial function? i need to know asap

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?

To convert celsius temperatures to fahrenheit, you can use the expression (c + 32). tom says that another way to write this expression is c + 32. what error did tom make?