the blood types of 600 people are collected at a doctors office. The table shows the breakdown of patients per blood type. If a person from this group is selected at random, what is the probability that this person has type A blood? Express your answer as a fraction in lowest terms or a Decimal terms or a decimal rounded to the nearest millionth??

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?