At a school assembly four out of the first 10 students were wearing spirit wear. Based on
this information, if 500 students were at the
assembly, then how many students could be
expected to be wearing spirit wear?

Someone me what is the area of this figure? 18m 18m 8m 16m

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?

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3