Is -2 a rational or irrational number

Find the lateral surface area plzzz

What are the critical values that correspond to a 95% confidence level and a sample size of 93? a. 65.647, 118.136 b. 59.196, 128.299 c. 57.143, 106.629 d. 69.196, 113.145

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =