(PLEASE HELP ASAP)

Graph: y < 1/3x + 1/2

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?