Under her cell phone plan, Jocelyn pays a flat cost of $42.50 per month and $3 per gigabyte. She wants to keep her bill at $50.30 per month. Write and solve an equation which can be used to determine gg, the number of gigabytes of data Jocelyn can use while staying within her budget. Equation:?

g=

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

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?

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr