Point a is the center of the regular triangle and a B equals 2 cm what is the area and perimeter of the triangle

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.

Is there an x intercept in the equation 60*1.15^x

Which expression is equal to (f+g)(x)?