What is greater than 6200 feet or one mile and 900 feet

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 are “like terms”? why can we only add like terms?

What does x = in this equation x+3+2x=x+5