*HELP QUICKLY PLEASE.* which of the following is correct? grandson needs help.

according to his teacher this needs to be done within the hour.

Name the quadrilaterals that have four equal sides.

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.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36