Sally wants to buy a computer that cost $500. She has already saved $350 and earns $15 for every hour she babysits. Which equation can be used to figure out how many hours Sally needs to babysit? A. 350=15x+500
B. 500=15x+350
C. 15x=500+350
D.500=15+350x

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?