What is the central angle of the arc

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.