9-9÷9+9-9÷9=

25 points

and brainits for the first right answer

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

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?

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83