Andrew's parents follow a regular schedule for taking care of their new car. They change the oil every 3,000 miles, rotate the tires every 10,000 miles and replace the windshield wipers every 15,000 miles. After how many miles will they first have to change the oil, rotate the tires and replace the
windshield wipers all at once?

10,000 miles

15,000 miles

30,000 miles

60,000 miles

Triangle xyz has vertices x(1,3), y(0,0)

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?

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.