I need help asap and ill give brainliest

Without graphing the linear functions, find the coordinates of the point of intersection of their graphs: y=3x−11 and y=4

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.

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3