In the figure, O is the centre of the circle SQR, RSQ = 110° and PSR is a straight line. Calculate QPS. help me!
I just want to check if my answer is right or wrong. If it is wrong please tell me how to do it.

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

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?

Use sigma notation to represent the following series for 9 terms.