Add the equations. 5x - y = -1
+ - 5x+3y= 25
O A. 2y = 24
O B. 2y = 26
O C. -10x= -24
O D. 10x - 4y= -26

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

I'm confused on this could anyone me and show me what i need to do to solve it.

The equation |pl = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn? o o -2 2 oor 2 -2 or 2 o