Which graph represents the piecewise-defined function? 3 if x < -2
y= 0 if x = 1
-1 if x < 1

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.

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2