For exercise, Francesca walks laps around a track. She walked 2 laps around the track in 8 minutes. If each lap is 440 yards, how fast did Francesca walk? A.
110 yards per minute
B.
125 yards per minute
C.
55 yards per minute

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

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?

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?