Theleast-squares regression equation is

y=574.3x+19,020 where y is the median income and x is the percentage of 25 years and older with at least abachelor's degree in the region. The scatter diagram indicates a linear relation between the two variables with a correlation coefficient of 0.6774. Complete parts(a) through(d).

(c) Interpret the slope. Select the correct choice below and fill in the answer box to complete your choice.

(Type an integer or decimal. Do notround.)

A.

For a median income of$0, the percent of adults with abachelor's degree is

%.

B.

For0% of adults having abachelor's degree, the median income is predicted to be $

please show work

.

C.

For every dollar increase in medianincome, the percent of adults having at least abachelor's degree is

%, on average.

D.

For every percent increase in adults having at least abachelor's degree, the median income increases by $

, on average.