Select the correct answer
which data set has a wider spread? why?

set a: {9, 11, 24, 11, 4, 20, 16, 7, 18, 15, 28, 6}
set b: {9, 12, 15, 3, 21, 24, 5, 9, 16, 21}
a. set a
b. set b
has a wider spread because
a. its mean is greater
b. its range is greater

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

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?

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.