Many fans of ‘80's music believe that the song "Open Arms" by the band Journey is an iconic song in that it is the epitome of the power rock ballads that were famous in the 1980's. How many fans of ‘80's music would you need to survey to construct a 90% confidence interval for the proportion of ‘80's music fans who think that "Open Arms" is an iconic ‘80's song give or take 5 percentage points?

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

What’s 8y+48 and factor each expression completely

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?