There is a group of 7 people are ordering pizza. each person wants 3 slices and each pizza has 8 slices. how many pizzas should they order

Iam so stuck. what is the worked out answer for this question?

Identify the number as a rational or irrational.explain. 127

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?